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TERIDIAN 71M6534 Demo Board User`s Manual

1. Traneformere PULSE OUTPUTS DIO6 WPULSE Ol wn IDP a V3P3SYS INEUTRAL 5 IDN DIO8 XPULSE DIOTIRPULSE 5 V3P3SYS IAN DIO9 YPULSE O IB IBN ICP Eo ES ES ae et 1 ICN 0104 V3P3A 2 gt 6 V3P3SYS VBo 6534 ICE Connector Single Chip VB Meter DEBUG BOARD OPTIONAL 1 VC MPU HEARTBEAT 5Hz DIO56 OHO K vs NEUTRAL 2 x CE HEARTBEAT 1Hz 01057 gt OHO 5_ GND j dq e DIO58 pBG O 8 QGND DB V5 DBG 5 OHOP TO 4 5V TA 474 RS 232 INTERFACE RX 12 oHa PTO 5 m VBAT GND 5 7 RTM INTERFACE 9 1184 battery ___ TMUXOUT a mue FPGA optional 7 L J5 6 6 S _ QV OPT 68 Pin Connector V3P3D ES 4 2 y 4 to NI PGI 6534 On board V5 DBG DIO Board components 15 160115 5 powered by 13 ollo DBE x V3P3D Nic DBG zm J2 21 MEETS 7 05 23 2008 Figure 1 2 Block diagram for the TERIDIAN D6534T14A2 Demo Board with Debug Board Page 12 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual
2. 54 Figure 2 8 External Components for 54 Figure 2 92 Oscillator 55 10 55 Figure 2 11 LCD Connections _ ____ ____________ 56 Figure 2 12 Optical Interface Block 56 Figure 2 13 Meter with Calibration 5 57 Figure 2 14 Calibration System 5 58 Figure 3 1 D6534T14A2 Demo Board Board Description Default jumper settings indicated in yellow 63 Figure 4 1 TERIDIAN D6534T14A2 Demo Board Electrical Schematic 1 3 66 Figure 4 2 TERIDIAN D6534T14A2 Demo Board Electrical Schematic 2 3 67 Figure 4 3 TERIDIAN D6534T14A2 Demo Board Electrical Schematic 3 3 68 Figure 4 4 TERIDIAN D6534T14A2 Demo Board Top nnn 70 Figure 4 5 TERIDIAN D6534T14A2 Demo Board Bottom 71 6 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN Figure 4 6 TERIDIAN D6534T14A2 Demo Board Top Signal 72 Figure 4 7 TERIDIAN D6534T14A2 Demo Board Bottom Signal 75 Figure 4 8 TERIDIAN D6534
3. Display useful RAM addresses 08 Reads data words 0x08 0 0 0x10 0x14 04 12345678 9876ABCD Writes two words starting 0x04 MPU or XDATA space is the address range for the MPU 0x0000 to OxFFF All MPU data words in 4 byte 32 bit format Typing will access the 32 bit word located at the byte address 4 A 0x28 The energy accumulation registers of the Demo Code be accessed by typing two Dollar signs typing question marks will display negative decimal values if the most significant bit is set Commands for DIO RAM Configuration RAM and SFR Control DIO AND SFR CONTROL Comment Allows the user to read from and write to DIO RAM and special function registers SFRs R option register option Command RIx Select RAM location x 0x2000 offset is combinations automatically added Select internal SFR at address x Read consecutive SFR registers in Decimal starting at address a Ra n m Set values of consecutive registers to n and m starting at address a RI2 Read DIO RAM registers 2 3 and 4 in Hex DIO or Configuration RAM space is the address range 0x2000 to Ox20FF This RAM contains registers used for configuring basic hardware and functional properties of the 71M6534 6534H and is organized in bytes 8 bits The 0x2000 offset is automatically added when the command RI is typed mE Read consecutive registers in Hex starting at address
4. 2 27 PHADJ 20 2 cosQzf T 1 20 2 cosQzf T 0 2 FAST CALIBRATION The calibration methods described so far require that the calibration system sequentially applies currents at various phase angles A simpler approach is based on the calibration system applying a constant voltage and current at exactly zero degrees phase angle This approach also requires much simpler mathematical operations Before starting the calibration process the voltage and current calibration factors are set to unity 16384 and the phase compensation factors are set to zero During the calibration process the meter measures for a given constant time usually 30 seconds and is then examined for its accumulated Wh and VARh energy values Access to the internal accumulation registers is necessary for this method of calibration The phase angle introduced by the voltage and or current sensors is then simply determined by VARh Wh CAL is determined by comparing the applied voltage to the measured voltage or applied CAL 106384 measured CAL IA is determined by comparing applied real energy with the measured apparent energy and compensating for the change applied to CAL VA 16384 Wh CAL 2 CAL VA measured The derivation of these formulae is shown in the Appendix Page 44 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 2 2 J ERIDIAN CALIBRATION
5. A cos 1 0 IV cos 0 XV XI 0 Ay cos 180 3 uu e COs 1 180 IV 1 80 XV XI 4 2 8 0 2 2 5 A v E 8 0 2 1 6 3 Ay 0 180 0 Use above results along with Ego and to calculate _ IV Ay Ay cos 60 6 IV cos 60 7 60 Ay Ay 0 9 Ay tan 60 sin 1 _ IV Ay 5 60 0 _ 60 Ew 1 Ay Ay Ay tan 60 sin 1 Subtract 8 from 7 9 2 Ay tan 60 sin use equation 5 E 2 10 E44 tan 60 sin 8 0 11 E44 2 60 tan 43 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 2 1 3 JT ERIDIAN 4 m 12 3 Ps tan 60 E Es 2 Now that we know the Ax and errors we calculate the new calibration voltage gain coefficient from the previous ones CAL V CAL Vg XV We calculate PHADJ from the desired phase lag 1 0 22 20 2 cosf T PHADJ 22 1 2 sin 27f T T 1 2 2 7 we calculate the new calibration current gain coefficient including compensation for a slight gain increase in the phase calibration circuit CAL 2 Ay 2
6. R139 Ferrite Bead 600o0hm 1 5 115 C6 R6 1 141 100 2W 100 2W 0 47uF 1000VDC 0 PS SEL 0 VA IN POWER SUPPLY SELECTION TABLE SELECTION PS SEL 0 JP1 ON BOARD SUPPLY EXT 5Vdc SUPPLY THRU J1 OUT EXT 5Vdc SUPPLY THRU OUT DEBUG BOARD R100 VBAT 100 JP15 DIO56 DIO57 DIO58 Q VBA ND Q ND R102 ND VBAT GND ND A 100 Q Q Page 66 of 86 HEADER 8X2 DEBUG CONNECTOR D3 1N4736A 6 8V 1W D4 1N4148 VBAT 5Vdc EXT SUPPLY J1 JP13 R101 100 GND CKTEST TMUXOUT 62 R12 UART_TX 62 D6534T14A2 SCHEMATICS PCB LAYOUT AND BOM 130 68 1 R2 8 06K R4 25 5K OFF PAGE INPUTS DIO56 DIO57 DIO58 CKTEST TMUXOU UART T NEUTRAL gt gt TL431 U6 C4 10uF 6 3V 1206 PACKAGE OFF PAGE OUTPUTS V3P3 GND UART VAIN L1 Ferrite Bead 600 C5 0 1uF VBAT CURE V3P3 C42 1000pF GND Footing holes J15 14 1 9 35 2 3 Mount holes Mount holes Figure 4 1 TERIDIAN D6534T14A2 Demo Board Electrical Schematic 1 3 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual R15 R16 R17 220 220 220 R26 R27 220 220 RV2 VARISTOR R38 R39 R40 220 220 220 R46 R47 220K 220K NEUTRAL RV3 VARISTOR R58 R59 R60 220 220 220 R66 R67 220K 220K NEUTRAL C15 1000pF VOLTAGE CND
7. CALBAD BAD 56 after reset when the read of the calibration data has bad longitudinal redundancy check or read failure cuock unser pe when the clock s current reading is A More than a year after the cock UNSET previously saved reading or B Earlier the previously saved reading or C There is no previously saved reading Set after reset when the read of the power register data has a bad longitudinal redundancy check or read failure in both copies Two copies are used because a power failure can occur while one of the copies is being updated Indicates that a grounded neutral was detected TAMPER Tamper was detected 1 SOFTWARE A software defect was detected __ 21 __22 __23 Element has a sag condition This bit is in real time by the CE and detected by the ce busy interrupt ce busy isr in ce c within 8 sample intervals about 2 6ms A transition from normal operation to SAGA causes the power registers to be saved because the demo PCB is powered from element A Element B has a sag condition This bit is set in real time by the CE and by the ce busy interrupt ce busy isr in ce c within 8 sample Em about 2 6ms SAGC Z Element C has a sag condition See the description of the other sag bits A square wave at the line frequency with a jitter of up to 8 sample CE intervals about 2 6ms ONE SEC Changes each accumulation interval Table 1 10
8. Data bits Parity None Disconnect a call if idle for more than 20 Cancel the call if not connected within 50 Data Connection Preferences Port speed Data Protocol Compression Disabled Flow control Xon off ___ Stop bits 1 Flow cantral Restore Defaults Figure 1 4 Port Speed and Handshake Setup left and Port Bit setup right Once the connection to the demo board is established press lt CR gt and the prompt gt should appear Type gt to see the Demo Code help menu Type gt i to verify the Demo Code revision 1 8 USING THE DEMO BOARD The 71M6534 6534H Demo Board is a ready to use meter prepared for use with external current transformers Using the Demo Board involves communicating with the Demo Code via the command line interface CLI The CLI allows modifications to the metering parameters access to the EEPROM initiation of auto cal sequences selection of the displayed parameters changing of calibration factors and more operations that can be used to evaluate the 71M6534 chip Before evaluating the 71M6534 6534H on the Demo Board users should get familiar with the commands and responses of the CLI A complete description of the CLI is provided in section 1 8 1 Page 16 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 11 6534 Demo Board User s Manual 1 8 1 SERIAL COMMAND LANGU
9. Of the meter is recorded The voltage reading error Axv is determined as Vactual Videal Videal Apply the nominal load current at phase angles 0 60 180 and 60 300 Measure the Wh energy each time and record the errors Eo E180 and E300 Calculate the new calibration factors CAL CAL VA and PHADJ A using the formulae presented in section 2 1 2 or using the spreadsheet presented in section 2 2 5 Apply the new calibration factors CAL IA CAL VA and PHADJ A to the meter The memory locations for these factors are given in section 1 9 1 Test the meter at nominal current and if desired at lower and higher currents and various phase angles to confirm the desired accuracy Store the new calibration factors CAL IA CAL VA and PHADJ A in the flash memory of the meter If a Demo Board is calibrated the methods shown in sections 1 9 3 and 1 9 4 can be used Repeat the steps 1 through 7 for each phase For added temperature compensation read the value in CE RAM location 0x54 and write it to CE RAM location 0x11 This will automatically calculate the correction coefficients PPMC and PPMC2 from the nominal temperature entered in CE location Ox11 and from the characterization data contained in the on chip fuses Step 2 and the energy measurement at 0 of step 3 can be combined into one step 2 2 3 FAST CALIBRATION AUTO CALIBRATION The fast calibration procedure is supported by the Demo Co
10. The adjustment of the oscillator frequency using ADJ 6 0 at room temperature will cause the 71 6534 IC to maintain the adjusted frequency The digital rate adjustment can be used to adjust the clock rate up to 988 with a resolution of 3 8ppm clock rate is adjusted by writing the appropriate values to PREG 16 0 and 1 0 The default frequency is 32 768 RTCLK cycles per second To shift the clock frequency by ppm calculate PREG and QREG using the following equation 4 PREG QREG floor 2 8 1 A 10 PREG and QREG form a single adjustment register with QREG providing the two LSBs The default values of PREG and QREG corresponding to zero adjustment are 0x10000 0x0 respectively Setting both PREG and OREG to zero is illegal and disturbs the function of the RTC If the crystal temperature coefficient is known the MPU can integrate temperature and correct the RTC time as necessary using PREG 16 0 and OREG 1 0 The Demo Code adjusts the oscillator clock frequency using the parameters Y CAL Y CAL and Y CAL2 which can be obtained by characterizing the crystal over temperature Provided the IC substrate temperature tracks the crystal temperature the Demo Code adjusts the oscillator within very narrow limits The MPU Demo Code supplied with the TERIDIAN Demo Kits has a direct interface for these coefficients and it directly controls the PREG 16 0 and QREG 1 0 registers The Demo Code uses the c
11. 10 MAXIN The neutral current 15 over IN Thrshld In a real meter this could indicate faulty distribution or tampering 11 MAXIA The current of element is over IThrshld In a real meter this could indicate overload 12 MAXIB The current of element B is over IThrshld In a real meter this could indicate overload 13 MAXIC The current of element C is over IThrshld In a real meter this could indicate overload The temperature is below the minimum 40C established in option gbl h This is not very accurate in the demo code because the calibration 14 MINT temperature is usually poorly controlled and the default temp nom is usually many degrees off 40C is the minimum recommended operating temperature of the chip Page 36 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Status The temperature is above the maximum 85C established in option_gbl h This is not very accurate in the demo code because the calibration temperature is usually poorly controlled and the default temp_nom is usually many degrees off 85C is the maximum recommended operating temperature of the chip Just after midnight the demo code sets this bit if VBat lt VBatMin The BATTERY BAD read is infrequent to reduce battery loading to very low values When the battery voltage is being displayed the read occurs every second for up to 20 seconds CLOCK_TAMPER Clock set to a new value more than two hours from the previous value
12. Wh measured measured VARh The value for tan be used directly without calculating trigonometric values when measured determining the values for PHAD n We simplify the rather complex term for PHADJ n tan l 1 22 20 2 cos 2af T PHADJ 2 1 2 sin 27f T tan T 1 2 cosQaf T introduced in Calibration Theory section by substituting the constant parts of it with the variables a b and c 1 1 27 24 27 8 277 1 27 5100227 AT c 1 0 2 cosQf T Now we can calculate a b and c for 50Hz and for 60Hz and then insert the values back into the original equation for PHADJ while at the same time writing 1048576 for 2 0 02229 PHADJ 1048576 rer for 60Hz metering 0 1487 0 0131 measured measured 0 0155 PHADJ 1048576 for 50Hz metering 0 1241 0 09695 measured measured For the voltage the ratio of the applied and measured RMS voltages determines the calibration factor V CAL VA 16384 2 _ measured Page 84 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN For the current calibration we have to realize that the meter s signal is the vector sum of the real Wh and imaginary VARh parts of the energy i_gain the current gain must be scaled to eliminate power errors and rotated in the complex plane to eliminate phase error Let be the ph
13. CAL VA and PHADJ A using the formulae presented in section 2 1 1 or using the spreadsheet presented in section 2 2 5 Apply the new calibration factors CAL IA CAL VA and PHADJ A to the meter The memory locations for these factors are given in section 1 9 1 Test the meter at nominal current and if desired at lower and higher currents and various phase angles to confirm the desired accuracy Store the new calibration factors CAL IA CAL VA and PHADJ A in the flash memory of the meter If the calibration is performed on a TERIDIAN Demo Board the methods shown in sections 1 9 3 and 1 9 4 can be used Repeat the steps 1 through 7 for each phase For added temperature compensation read the value in CE RAM location 0x54 and write it to CE RAM location 0x11 This will automatically calculate the correction coefficients PPMC and PPMC2 from the nominal temperature entered in CE location Ox11 and from the characterization data contained in the on chip fuses Tip Step 2 and the energy measurement at 0 of step 3 can be combined into one step 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 2 2 2 CALIBRATION PROCEDURE WITH FIVE MEASUREMENTS The calibration procedure is as follows 1 2 Tip All calibration factors are reset to their default values i e CAL_IA CAL_VA 16384 and PHADJ_A 0 An RMS voltage Vigea consistent with meter s nominal voltage is applied and the RMS reading
14. The number of samples per accumulation interval i e PRE SAMPS SUM CYCLES X The pulse rate control factor determined by the CE registers PULSE SLOW and PULSE FAST Almost any desired Kh factor can be selected for the Demo Board by resolving the formula for WRATE IMAX VMAX 66 1782 Kh In 8 X For the Kh of 3 2Wh the value 171 decimal should be entered for WRATE at CE location 0x21 using the CLI command gt 21 171 Page 25 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 1 8 4 ADJUSTING THE DEMO BOARDS TO DIFFERENT CURRENT TRANS FORMERS The Demo Board is prepared for use with 2000 1 current transformers CTs This means that for the un modified Demo Board 208A on the primary side at 2000 1 ratio result in 104mA on the secondary side causing 176 8mV at the 1 7Q resistor pairs R24 R25 R36 R37 R56 R57 2 x 3 4Q in parallel In general when ZMAX is applied to the primary side of the CT the voltage Vin at the IB or IC input of the 71 6534 is determined by the following formula Vin R R IMAX N where N transformer winding ratio R resistor on the secondary side If for example if the current corresponding to IMAX 208A is applied to a CT with a 2500 1 ratio only 83 2mA will be generated on the secondary side causing only 141mV of voltage drop The steps required to adapt a 71M6534 Demo Board to a transformer with a winding ratio o
15. restating 20 Dehe on compute engine conoi ity rep information message 22222 meter display cowo rk 0 rf 0 iia ep on te command 0 say ep onreset 0 P engine ___ Commands for CE Data Access Allows user to read from and write to CE data space Starting CE Data Address option option Command JA Read consecutive 16 bit words in Decimal starting at combinations address A 1 555 Read consecutive 16 bit words in Hex starting at address A 1 Write consecutive memory values starting at address A Update default version of CE Data in flash memory 140 Reads CE data words 0x40 0x41 and 0x42 E 12345678 9876ABCD Writes two words starting Ox7E All CE data words are in 4 byte 32 bit format Typing will access the 32 bit word located at the byte address 0x1000 4 A 0x1028 Page 18 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Commands for MPU XDATA Access Allows user to read from and write to MPU data space Starting MPU Data Address option option Command A Read three consecutive 32 bit words in Decimal combinations starting at address A Read three consecutive 32 bit words in Hex starting at address A Write the values and m to two consecutive addresses starting at address A
16. v3 VIPS 1847 2121 ICE 1 1 4 1 1 1 1 1 2 COT 4 2 gt sa 4912 95031 ES x NETT HT amp 9 523 5 9935 ve 2 2 D6534 4L DEMO BOARD n OUT o 3 O SER DOSS3TI4A1 2244 DESUS TERIDIAN Semiconductor Corporation 6440 Oak Canyon Rd Suite 100 Irvine CA 92618 5201 Phone 714 508 8800 Fax 714 508 8878 http www teridian com meter support teridian com nanan 2 3 5 LCD 20 frac WA gt wm x AI 71M6534H Demo Board USER S MANUAL 5 28 2008 1 33 00 PM V2 0 71M6534H Demo Board User s Manual SEMICONDUCTOR CORP Page 2 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN TERIDIAN Semiconductor Corporation makes no warranty for the use of its products other than expressly contained in the Company s warranty detailed in the TERIDIAN Semiconductor Corporation standard Terms and Conditions The company assumes no re sponsibility for any errors which may appear in this document reserves the right to change devices or specifications detailed herein at any time without notice and does not make any commitment to update the i
17. SEG18 SEG20 SEG23 Dedicated LCD Segment Output SEG24 DIO4 Multi use pins configurable as either LCD SEG driver or DIO DIO4 SCK DIO5 SDA when configured as EEPROM interface WPULSE 0106 VARPULSE 0107 SEG50 DIO30 when configured as pulse outputs SEGS55 E _ ISYNC Multiuse pin configurable as either LCD SEG driver or Emulator Handshake SEG54 E TBUS3 SEG53 E TBUS2 SEG52 E TBUS1 51 TBUSO SEG56 DIO36 Multiuse pins configurable as either LCD SEG driver or Emulator Trace Bus Multi use pins configurable as either LCD SEG driver or DIO SEG75 DIO55 SEG3 PCLK SEG4 PSDO SEGS PCSZ SEG6 PSDI DIO3 DIO56 DIO57 01058 Dedicated DIO pins E RXTX SEG9 I O E RST SEG11 E TCLK SEG10 ICE enable When zero E RST E TCLK and E RXTX become SEG32 SEG33 and ICE E SEG38 respectively For production units this pin should be pulled to GND to disable the emulator port Multi use pin configurable as either Clock PLL output or LCD segment driver Can be enabled and disabled by CKOUT EN TMUXOUT Digital output test multiplexer Controlled by 0 Multi use pin configurable as either Optical Receive Input or general DIO When OPT RX DIO1 configured as RX this pin receives a signal from an external photo detector used in an IR serial interface Multi use pin configurable as Optical LED Transmit Output WPU
18. etc e maintains and provides access to basic household functions such as real time clock e t provides access to control and display functions via the serial interface enabling the user to view and modify a variety of meter parameters such as Kh calibration coefficients temperature compensation etc e t provides libraries for access of low level IC functions to serve as building blocks for code development A detailed description of the Demo Code can be found in the Software User s Guide SUG In addition the comments contained in the library provided with the Demo Kit can serve as useful documentation The Software User s Guide contains the following information e Design guide e Design reference for routines e Tool Installation Guide e List of library functions e 80515 MPU Reference hardware instruction set memory registers Page 32 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 1 10 2 IMPORTANT DEMO CODE MPU PARAMETERS In the Demo Code certain MPU XRAM parameters have been given fixed addresses in order to permit easy external access These variables can be read via the serial interface as described in section 1 7 1 with the n command and written with the command where n is the word address Note that accumulation variables 64 bits long and are accessed with n read and n hh ll write the case of accumulation variables Default values are the value
19. n can be determined by the following formula error QUANT _n O VMAX IMAX LSB Where error observed error at a given voltage V and current 1 VMAX voltage scaling factor as described in section 1 8 3 IMAX current scaling factor as described in section 1 8 3 LSB QUANT LSB value 1 04173 10 W Vel Example Assuming an observed error in channel A as in Figure 2 6 we determine the error at 1A to be 1 If VMAX is 600V and IMAX 208A and if the measurement was taken at 240V we determine QUANT_A as follows 1 240 1 QUANT _A _100 _____ 1 846 042 600 208 1 04173 10 QUANT_A is to be written to the CE location 0x26 see the Data Sheet It does not matter which current value is chosen as long as the corresponding error value is significant 5 error at 0 2A used in the above equation will produce the same result for QUANT_A Input noise and truncation can cause similar errors in the VAR calculation that can be eliminated using the QUANT_VARn variables QUANT_VARn is determined using the same formula as QUANT Page 52 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 2 3 J ERIDIAN CALIBRATING AND COMPENSATING THE RTC The real time clock RTC of the 71M6534 is controlled by the crystal oscillator and thus only as accurate as the oscillator The 71M6534 has two rate adjustment mechanisms Analog rate adjustment using the I O RAM register ADJ 6 0 Th
20. 3 CHECKING OPERATION A few seconds after power up the LCD display on the Demo Board should display this brief greeting _____ 0 The HELLO message should be followed by the display of accumulated energy alternating with the text Wh 3 io jojo 218101 j If the PB switch on the Demo Board is pressed and held down the display will cycle through a series of parameters as shown in Table 1 4 Displayed Displayed Deviation from nominal 1 DELTA temperature 10 DATE Date from RTC yyyy mm dd 2 H Line frequency Hz 2 d calculated from current h Accumulated real energy 12 Wh h 3 EDGES 4 Exported real energy Wh 1 Accumulated reactive energy IVARh 14 PULSES Accumulated pulses Exported reactive energy 15 Accumulated apparent VAh energy VARh 16 Voltage Hours of operation since last reset 1 100 h 17 VBAT Battery voltage Real time from RTC hh mm ss Table 1 4 Selectable Display Parameters Once the Debug Board is plugged into J2 of the Demo Board LED DIO1 on the Debug Board will flash with a frequency of 1Hz indicating CE activity The LED DIOO will flash with a frequency of 5Hz indicating MPU activity Page 14 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 ERIDIAN 1 7 4 SERIAL CONNECTION SETUP After connecting the DB9 serial port to a PC start the HyperTerminal application and create a ses
21. 60 0 A IV cos 60 cos 60 Ay Ags cos 60 cos sin 60 sin 3a 60 Ay Ay 0 9 Ay tan 60 sin 1 Combining 2a 4 Ey l tan 60 tan i E tan 60 E 629 E 1 tan 60 and from 2a E 1 COS Now that we know the and errors we calculate the new calibration voltage gain coefficient from the previous ones CAL V CAL _ XV We calculate PHADJ from the desired phase lag i cos 2af T PHADJ 2 1 2 2 7 tan T 1 2 2 7 Page 42 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN And we calculate the new calibration current gain coefficient including compensation for a slight gain increase in the phase calibration circuit CAL OU 27 PHADJQ 2 PHADJ 20 2 2 7 7 1 20 2 cosQaf T 1 27 2 1 2 CALIBRATION WITH FIVE MEASUREMENTS The five measurement method provides more orthogonality between the gain and phase error derivations This method involves measuring Eo E180 and Again set all calibration factors to nominal i e CAL A 16384 CAL VA 16384 PHADJA 0 First calculate Axy from Ev 1 gt A E l Calculate from Eo and E480 E IV Ay Ay cos 0 2
22. CENA I EE 41 2 1 1 Calibration with Three 41 2 1 2 Calibration with Five Measurements 43 2 1 3 u 017 1 UN MOREM _ Td 44 22 Calibration Procedures ce 45 2 2 1 Calibration Procedure with Three Measurements 46 2 2 2 Calibration Procedure with Five 47 2 2 3 Fast Calibration 8 4T 2 2 4 Calibration Procedure for Rogowski Coil 48 2 2 5 Calibration 49 2 2 6 Compensating for 52 23 Calibrating and Compensating the 2 25 53 24 Se urisuediciuemeet 54 2 4 1 CoOmpornepnisMor the V PIE uei ___________ _________ INSCRITO 54 2 4 2 24 11 18 0 MP 54 Oscillator 55 Page 5 of 86 2005 2007 TERIDIAN S
23. Erased Flash Memory and File Load Menu Demo Boa Options Window Help iu x ADM51 Emulator test XDATA_1 Seis Address 203E 0 aa 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 XDATA_1 Address 2038 Dec 4 00 00 00 00 00 00 00 00 00 00 00 00 22457 112 0 02 IT A4 76 00 00 OC 1 08 EAE FF FF 07 FF nn Load options v Load Code v Verify Code DBUMESS File Type Hex Loading Bank Offset nn UU 20C8 11 0 00 00 00 00 2000 00 00 00 da 00 00 00 00 2008 00 00 00 00 00 00 00 00 20E0 00 00 00 00 00 00 00 00 20 8 00 00 0 10 00 00 00 20F0 00 00 00 00 00 00 00 00 20 8 10 00 00 Dt 00 00 2100 Load Symbols Load Source Lines Microsoft 2005 2007 TERIDIAN Semiconductor Corporation Adobe Re Demo Boa Signum S Status 1 DM51 41807 CPU 71M6511 PC 0000 BANK 0 DPTR 0000 00 B 00 CY 0 0 F0 0 0 SP 07 00 P 0RS 0 1 0 RO R2 01 R4 00 R6 00 Status_1 ADM51 41807 CPU 71M6511 PC 0000 BANK 0 DPTR 0000 00 5 00 CY 0 AC 0 FO 0 OV 0 RSI Fi RO R2 01 00 R6 00 R1 05 R3 13 R5 00 R 00 P 07 E 00 0 V2 0 J ERIDIAN 1 9 7 THE PROGRAMMING INTERFACE OF THE 71M6534 6534H Flash Downloader ICE Interface Signals The signals li
24. SEMICONDUCTOR CORF 1 7 1 POWER SUPPLY SETUP There are several choices for meter power supply e Internal using phase A of the AC line voltage The internal power supply is only suitable when phase A exceeds 220V RMS e External 5VDC connector J1 on the Demo Board e External 5VDC connector J1 on the Debug Board The power supply jumper JP1 must be consistent with the power supply choice JP1 connects the AC line voltage to the internal power supply This jumper should usually be left in place 1 7 2 CABLE FOR SERIAL CONNECTION DEBUG BOARD For connection of the 9 serial port to a PC either a straight or a so called null modem cable may be used JP1 and JP2 are plugged in for the straight cable and JP3 JP4 are empty The jumper configuration is reversed for the null modem cable as shown in Table 1 1 Installed Installed ae NulkModem Cable Alternative instaled Installed Table 1 1 Jumper settings on Debug Board JP1 through JP4 can also be used to alter the connection when the PC is not configured as a DCE device Table 1 2 shows the connections necessary for the ua DB9 cable and the pin definitions Table 1 2 Straight cable connections Table 1 3 shows the connections for the null modem 9 cable and the pin definitions mE Ground Table 1 3 Null modem cable connections Page 13 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 1 7
25. Total Watt hours consumed through element 2 Ox4A Total Watt hours generated inverse consumed through element 2 Ox3A C Total VAR hours consumed through element 2 0x52 VAHhe C Total VAR hours generated inverse consumed through element 2 0x42 VAh C Total VA hours in element 2 Table 1 11 MPU Accumulation Output Variables Page 38 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 1 10 3 USEFUL CLI COMMANDS INVOLVING THE MPU AND CE Table 1 12 shows a few essential commands involving MPU data memory MR1 2 Displays the current RMS current in phase B RI5 26 Disables the emulator clock by setting bit 5 in RAM address 0x05 This command will disable emulator programmer access to the 71M6534 RI5 6 Re enables the emulator clock by clearing bit 5 RAM address 0x05 Stores the current CE RAM variables in EEPROM memory The variables stored in flash memory 10 will be applied by the MPU at the next reset power up if no valid data is available from the EEPROM Table 1 12 CLI Commands for MPU Data Memory 1 11 USING THE ICE IN CIRCUIT EMULATOR The ADM51 ICE by Signum Systems www signum com can be used to erase the flash memory load code and debug firmware Before using the ICE the latest WEMU51 application program should be downloaded from the Signum website and installed It is very important to create a new project and selecting the TERIDIAN 71M6534 IC in the project dia
26. a The SFRs special function registers are located in internal RAM of the 80515 core starting at address Ox80 Page 19 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Commands for EEPROM Control Allows user to enable read and write to EEPROM EE option arguments Command EECn EEPROM Access 1 gt Enable 0 gt Disable combinations EERa b Read EEPROM at address a for b bytes characters to buffer sets Write engh Transmit buffer to EEPROM at address Wieviesthfe ________ isd Saves calibration io EEPROM Example EEShello Writes hello to buffer then transmits buffer to EET 0210 EEPROM starting at address 0x210 eS Due to buffer size restrictions the maximum number of bytes handled by the EEPROM command is 0 40 Auxiliary Commands amp 37 Typing a comma 5 7 repeats the command issued from the previous command line This is very helpful when examining the value at a certain address over time such as the CE DRAM address for the temperature 0x40 The slash is useful to separate comments from commands when sending macro text files via the serial interface All characters in a line after the slash are ignored Commands controlling the CE TMUX and the RTM C COMPUTE ENGINE Comment CONTROL Allows the user to enable and configure the compute engine OOOO O Command
27. a i EMULRATOR 7 OUT 41 mm a iam 214 GAD BIST END Ns 25 a T 14 TES A Res gt GAC 415 4 cel GNE ip ore d um non TIU Tra Qao 1852 22 Fa m 256005052058 0000060066 41 fATERIDIAN 2 1 cal SF EXE SEMICONDUCTON 6354 4 BOARD EE REV 2 0 15 497 97777 Figure 4 4 TERIDIAN D6534T14A2 Demo Board Top View Page 70 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 jJ ENIDIAN Figure 4 5 TERIDIAN D6534T14A2 Demo Board Top Copper Layer Page 71 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 jJ ENIDIAN Page 72 of 86 Figure 4 6 TERIDIAN D6534T14A2 Demo Board Bottom Copper Layer 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual SEMICONDUCTOR CORP Figure 4 7 TERIDIAN D6534T14A2 Demo Board Ground Layer Page 73 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual m a a 60
28. display for voltage or current Usage OOS O Command MR1 phase Displays instantaneous RMS current combinations MR2 phase Displays instantaneous RMS voltage Example MR1 3 Displays phase C RMS current 3 Phase 4 is the measured neutral current No error message is issued when an invalid parameter is entered e g MH1 8 Commands for Controlling the MPU Power Save Mode gt POWER SAVE MOD Description Enters power save mode Disables CE ADC CKOUT ECK RTM SSI TMUX VREF and serial port sets MPU clock to 38 4KHz Return to normal mode is achieved by resetting the MPU Z command Commands for Controlling the RTC year month day weekday 1 Sunday If the combinations weekday is omitted it is set automatically on Y CAL and CALC2 Example 05 03 17 5 Programs the to Thursday 3 17 2005 RTA1 1234 Speeds up the RTC by 1234 PPB The Military Time Format is used for the i e 15 00 is 3 00 PM RTAs t Real Time Adjust start trim Allows trimming of the RTC If s gt 0 the speed of the clock will be adjusted by t parts per billion PPB If the CE is on the value entered with will be changing with temperature based Page 22 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 1 6534 Demo Board User s Manual TENNAN SEMICONDUCTOR CORP Commands for Ac
29. eoe le Jay eo INPUTS OFF PAGE NC 22pF ICE Header a 2 Sere 21444444455 191 ee 5 5 8 8 80000 C79 UART_RX 25 OUTPUTS GND close to th L OW GND IC SEG25 DIO05 ako VA _ GND VB TP15 16 gt 21056 TP C28 2 C50 SEREEPROM R105 1000pF 0 1uF C52 C51 Es E SERIAL EEPROM 5 ae HEADER 3 ICP ICN gt TMUXOUT VBAT gt gt IDP CKTEST ursday ebruary 14 2008 Figure 4 3 TERIDIAN D6534T14A2 Demo Board Electrical Schematic 3 3 Page 68 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 ERIDIAN PCB Digi Key Mouser Part Reference Footprint Number Part Number 8 65 217 620 22252829 on 2445 1314 1 ND C1608X7RiHT04K 222238330474 Vishay 1 56 59 69 70 553264108 1l 024 pF Rcos0s 490 3564 ND Murata 713 026 027 630 051 060 068 22 Rcosos 445 1273 ND 20 TK UCLAMP8301D TCT SEMTECH Tift fs JL Ne T seb 20 3835371016 0 2 20 S1011E 3e ND PZC3
30. for VFEED A VFEED B and VFEED Step 2 Voltage Cancellation Select a small current where voltage coupling introduces at least 1 5 energy error At this current measure the errors and to determine the coefficient VFEED E 225 eus VFEED previous S Page 48 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 ERIDIAN 2 2 5 CALIBRATION SPREADSHEETS Calibration spreadsheets are available from TERIDIAN Semiconductor They are also included in the CD ROM shipped with any Demo Kit Figure 2 3 shows the spreadsheet for three measurements Figure 2 4 shows the spreadsheet for five measurements with three phases For CT and shunt calibration data should be entered into the calibration spreadsheets as follows 1 2 Calibration is performed one phase at a time Results from measurements are generally entered in the yellow fields Intermediate results and calibration factors will show in the green fields The line frequency used 50 or 60Hz is entered in the yellow field labeled AC frequency After the voltage measurement measured observed and expected actually applied voltages are entered in the yellow fields labeled Expected Voltage and Measured Voltage The error for the voltage measurement will then show in the green field above the two voltage entries The relative error from the energy measurements at 0 and 6
31. is done using the following serial interface command gt 10 Thus after transferring calibration data with manual serial interface commands or with macro file that has to be done is invoking the U command After reset calibration data is copied from the EEPROM if present Otherwise calibration M data is copied from the flash memory Writing OxFF into the first few bytes of the EEPROM M deactivates any calibration data previously stored to the EEPROM Page 28 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 1 9 5 1 9 6 J ERIDIAN AUTOMATIC CALIBRATION AUTO CAL The Demo Code is able to perform a single point fast automatic calibration as described in section 2 2 3 This calibration is performed for channels A B and C only not for the NEUTRAL channel The steps required for the calibration are 1 Enter operating values for voltage and current in RAM The voltage is entered at MPU address 0x10 e g with the command 10 2400 for 240V the current is entered at Ox11 e g with the command 11 300 for 30A and the duration measured in accumulation intervals is entered at OxOF 2 The operating voltage and current defined in step 1 must be applied at a zero degree phase angle to the meter Demo 3 The CLB Begin Calibration command must be entered via the serial interface The operating voltage and current must be maintained accurately while the calibration is being
32. mode TP47 VREF 1 pin header providing access to the VREF pin Page 62 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual SEMICONDUCTOR CORP 2 pin headers mounted on the bottom of the board for IBN IN IBP IN connecting current transformers CTs to their associated IN inputs RET TELE 2 TRS Gi E EI EP INTERFACE BOARD SER DoS3 TLaA7 Figure 3 1 D6534T14A2 Demo Board Board Description Default jumper settings indicated in yellow Page 63 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 3 2 BOARD HARDWARE SPECIFICATIONS PCB Dimensions e Diameter e Thickness e Height w components Environmental e Operating Temperature e Storage Temperature Power Supply e Using AC Input Signal e DC Input Voltage powered from DC supply e Supply Current Input Signal Range e AC Voltage Signals VA VB VC AC Current Signals IB IC from CT Interface Connectors DC Supply Jack J1 to Wall Transformer Emulator J14 Input Signals Debug Board J2 Functional Specification e Program Memory NV memory e Time Base Frequency e Time Base Temperature Coefficient Controls and Displays e Reset e Numeric Display e Watts e V
33. of text characters to the EEPROM and read it back we apply the following sequence of CLI commands gt Enables the EEPROM gt EESthis is a test Writes text to the buffer gt 80 Writes buffer to address 80 Written to EEPROM address 00000080 74 68 69 73 20 69 73 20 61 Response from Demo Code gt 80 Reads text from the buffer Read from EEPROM address 00000080 74 68 69 73 20 69 73 20 61 Response from Demo Code gt 0 Disables the EEPROM Page 58 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 2 5 3 RTC Testing the RTC inside the 71M6534 6534H IC is straightforward and can be done using the serial command line interface CLI of the Demo Code To set the RTC and check the time and date we apply the following sequence of CLI commands gt M10 LCD display to show calendar date gt RTD05 09 27 3 Sets the date to 9 27 2005 Tuesday gt M9 LCD display to show time of day gt RTT10 45 00 Sets the time to 10 45 00 AM PM distinction 1 22 33PM 13 22 33 2 5 4 HARDWARE WATCHDOG TIMER WDT The hardware WDT of the 71M6534 6534H is disabled when the voltage at the V1 pin is at 3 3V V3P3 On the Demo Boards this is done by plugging in a jumper at TP10 between the V1 and V3P3 pins Conversely removing the jumper at TP10 will enable the WDT When the WDT is enabled typing W at the command line interface will cause the Demo Board to reset 2 5 b LCD Various t
34. 0 are entered in the yellow fields labeled Energy reading at 0 and Energy reading at 60 The corresponding error expressed as a fraction will then show in the two green fields to the right of the energy reading fields The spreadsheet will calculate the calibration factors CAL CAL VA and PHADJ A from the information entered so far and display them in the green fields in the column underneath the label 2 If the calibration was performed on a meter with non default calibration factors these factors can be entered in the yellow fields in the column underneath the label old For a meter with default calibration factors the entries in the column underneath old should be at the default value 16384 A spreadsheet is also available for Rogowski coil calibration see Figure 2 5 Data entry is as follows 1 2 3 Page 49 of 86 All nominal values are entered in the fields of step one The applied voltage is entered in the yellow field labeled Input Voltage Applied of step 2 The entered value will automatically show in the green fields of the two other channels After measuring the voltages displayed by the meter these are entered in the yellow fields labeled Measured Voltage The spreadsheet will show the calculated calibration factors for voltage in the green fields labeled CAL The default values 3973 for PHADJ x are entered in the yellow fields of step 3 If the calibra
35. 4109 PHADJ C default 0 CR1 emahle Figure 1 6 Typical Calibration Macro File gain CAL VB 16384 12 16019 CAL IB gain CAL IB 16384 It is possible to send the calibration macro file to the 71M6534H for temporary calibration This will temporarily change the CE data values Upon power up these values are refreshed back to the default values stored in flash memory Thus until the flash memory is updated the macro file must be loaded each time the part is powered up The macro file is run by sending it with the transfer send text file procedure of HyperTerminal pes Use the Transfer gt Send Text File command EM 1 9 3 UPDATING THE 6534 DEMO HEX FILE The d merge program updates the 6534 demo hex file with the values contained in the macro file This program is executed from a DOS command line window Executing the d merge program with no arguments will display the syntax description To merge macro txt and old 6534 demo hex into new 6534 demo hex use the command d merge old 6534 demo hex macro txt new 6534 demo hex The new hex file can be written to the 71M6534H through the ICE port using the ADM51 in circuit emulator This step makes the calibration to the meter permanent UPDATING CALIBRATION DATA IN FLASH MEMORY WITHOUT USING THE ICE OR A PROGRAMMER It is possible to make data permanent that had been entered temporarily into the CE RAM The transfer to EEPROM memory
36. 6534 6534H IC This em bedded application is developed to exercise all low level function calls to directly manage the peripherals flash programming and CPU clock timing power savings etc The 71M6534 6534H IC on the Demo Board is pre programmed with default calibration factors SAFETY AND ESD PRECAUTIONS Connecting live voltages to the demo board system will result in potentially hazardous voltages on the demo board THE DEMO SYSTEM IS ESD SENSITIVE ESD PRECAUTIONS SHOULD BE TAKEN A WHEN HANDLING THE DEMO BOARD 2 2 EXTREME CAUTION SHOULD BE TAKEN WHEN HANDLING THE DEMO BOARD 327 ONCE IT IS CONNECTED TO LIVE VOLTAGES DEMO KIT CONTENTS Demo Board D6534T14A2 with 71M6534H and pre loaded demo program Debug Board wo 5VDC 1 000mA universal wall transformers with 2 5mm plug Switchcraft 712A compatible e Serial cable 089 Male Female 2m length Digi Key AE1020 ND CD ROM containing documentation data sheet board schematics BOM layout Demo Code sources and executable and utilities S The CD ROM contains a file named readme txt that describes all files found on the CD ROM Page 9 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 1 4 DEMO BOARD VERSIONS At printing time of this document only the following version of the Demo Board is available Demo Board D6534T14A2 standard 1 5 COMPATIBILITY This manual applies to the following hardware and software r
37. 6SAAN Sulins Pat 4 04565848 Spade Terminal 623997 44 102 00 571510084 ____5 1040681 27 6 JPiJPI3JPT4JPT amp JPITJP18 HEADER2 2 Si01E 3eND 2 368 36 6 31 889FRCT ND RC1206FR 0768ROL Yageo 12117 1 2 _______ ______ ____ 1212 1210 9 1874876 880 8103 8104810 1 Rcosos PiOKACT ND _ ERJ 6GEYJ103V Panasonic 12121 oo Poor ERJ OGEYOROOV Panasonic 48 1 Rm Ne L 1102 51 8 131 58132 8133 81348140 RC1206 ERJ 8GEYOROOV RRR 12121 mss 4 swsw switch _P8051SCT ND___ EVG PJXOSM Panasonic 54 8 208 S10ME 3eND PZCS6SAAN L5 4 8 5011 7196834 3 werarP 14912014385 Yameichi 1911 20 21 ECRGZUZRSUETR 5 Table 4 1 D6534T14A2 Demo Board Bill of Material Page 69 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 jJ ENIDIAN
38. 8 DIO38 DIO2 OPT TX mm 3 SEG57 DIO37 TMUXOUT 4 SEG56 DIO36 SEG66 DIO46mm 5 GNDD TX mm 6 RESET SEG3 PCLK mm 7 V2P5 V3P3D mm 8 VBAT SEG19 CKTEST RX V3P3SYS SEGA48 DIO28 SEG4 PSDO SEG31 DIO11 SEG5 PCSZ SEG30 DIO10 SEG54 E TBUS3 SEG29 DIO9 YPULSE SEG53 E TBUS2 2 SEG28 DIO8 XPULSE SEG52 E TBUS1 Teridian SEG41 D1021 SEG51 E_TBUSO 40 01020 SEG37 DIO17 71M6534 SEG39 DIO19 SEG38 DIO18 MTX SEG27 DIO7 RPULSE DIO56 SEG26 DIO6 WPULSE 01057 SEG25 DIO5 SDATA 0058 SEG24 DIO4 SDCK DIO3 SEG23 COMO SEG22 COM SEG21 COM2 SEG20 COM3 ICE E SEG67 DIO47 SEG43 DIO23 SEG68 DIO48 SEG18 SEG69 DIO49 SEG17 SEG70 DIO50 SEG16 Page 83 of 86 gt ord 0 NO FO 5 9 5 55 st lt uumoooooogogoz o 90000 9 00000 LU LUI LUE LU Lr LLI LLI LLI LLI LLI LLI LLI LLI LLI LLI LLI 0 020 0 0 0 0 V 42 02 02 0 0 0 02 0 0 LLI 2 Figure 4 17 TERIDIAN 71M6534H epLQFP100 Pinout top view 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN 4 4 FORMULAE FOR FAST CALIBRATION A method for non trigonometric derivation of the factors for the fast calibration is shown below The phase angle q is calculated as follows 5 VARh measured tan
39. AGE The Demo Code residing in the flash memory of the 71M6534 6534H provides a convenient way of examining and modifying key meter parameters Once the Demo Board is connected to a PC or terminal per the instructions given in Section 1 7 2 and 1 7 4 typing will bring up the list of commands shown in Figure 1 5 Demo Board Connection HyperTerminal File Edit View Cal Transfer Help Usage lt char gt or 22 to get this help page Where char is an uppercase letter of the command The following commands lt char gt are available Repeat last command Ignore rest of line Access CE Data RAM D Access MPU Data RAM Control metering EX Information message Meter Display Control Power Save SFR and I O Control 1 Trim Controls DW Wait for watchdog reset Soft reset Battery mode commands EE EEPROM Control ER Error Recording For Example C to get help on Compute Engine Control lt Connected 0 28 31 ANSIW 300 8 N 1 Figure 1 5 Command Line Help Display The tables in this chapter describe the commands in detail Page 17 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Commands to Display Help on the CLI Commands Command help available for each of the options below Command 2 Command line interpreter help menu combinations LM m isi ep on access MPU RAM 0 Cf on repeat ast command ___
40. ARS Measurement Range e Voltage e Current Page 64 of 86 6 5 165 1mm 0 062 1 6mm 2 0 50 8mm 40 85 40 100 240V 700V rms 5VDC 0 5V 25mA typical 0 240V rms 0 0 25V p p Concentric connector 2 5mm 10x2 Header 0 05 pitch Spade Terminals and 0 1 headers on PCB bottom 8x2 Header 0 1 pitch 256KByte FLASH memory 1Mbit serial EEPROM 32 768kHz 20 at 25 0 04PPM C2 max Button SW2 8 digit LCD 14 segments per digit 8mm character height 89 0 x 17 mm view area red LED D5 red LED D6 120 700 V rms resistor division ratio 1 3 398 0 200A 1 70 burden resistor for 2 000 1 CT 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 4 APPENDIX This appendix includes the following documentation tables and drawings D6534T14A2 Demo Board Description D6534T14A2 Demo Board Electrical Schematic D6534T14A2 Demo Board Bill of Materials D6534T14A2 Demo Board layers copper silk screen top and bottom side Debug Board Description Debug Board Electrical Schematic Debug Board Bill of Materials e Debug Board PCB layers copper silk screen top and bottom side 71M6534H IC Description 1M6534H Pin Description 1M6534H Pin out Formulae for Fast Calibration Page 65 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 4 1 NEUTRAL C46 30nF 1000VDC RV1 VARISTOR N
41. C Compute Engine Enable 1 Enable combinations 0 Disable C Select input n for TMUX output pin n is interpreted as a decimal number En n CRSa b c d Selects CE addresses for RTM output Example CEO Disables CE followed by CE OFF display on LCD The Demo Code will reset if the WD timer is enabled NENNEN T3 Selects the VBIAS signal for the TMUX output pin Page 20 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board Users Manual O 27 SEMICONDUCTOR CORP Commands controlling the Auto Calibration Function Allows the user to initiate auto calibration and to store calibration values CL option Command combinations Begin auto calibration Prior to auto calibration the calibration coefficients are automatically restored from flash memory CLS Save calibration coefficients to EEPROM starting at address 0x0004 Restore calibration coefficients from EEPROM Restore coefficients from flash memory brat Starts auto calibration and saves data automatically A Before starting the auto calibration process target values for voltage duration and current must be entered in Pe MPU RAM see section 1 9 5 and the target voltage and current must be applied constantly during calibration gt Calibration factors can be saved to EEPROM using the CLS command Commands controlling the Pulse Counter Function PULSE COUNT CONTRO Allows the user t
42. CONNECTIONS Page 67 of 86 R18 220K R28 220K R41 220K R48 220K R61 220K R68 220K R19 220K R29 220K R42 220K R49 220K R62 220K R69 220K R20 220K R30 120K R43 220K R50 120K R63 220K R70 120K TERIDIAN SEMICONDUCTOR CORAP 750 R14 IAP GND R21 C44 220K NC R54 750 Ferrite Bead 00 Ferrite Bead 600ohm 750 R31 L13 TP2 L4 R132 R22 V3P3 VA 2 4 7K Ferrite Bead 600 R32 VA 750 C9 1000pF V3P3 750 R23 750 GND R44 220K C47 Ferrite Bead 600 NC R51 L12 4 V3P3 VB 2 R52 Ci VB V3P3 R56 1000 Ferrite Bead 600 750 V3P3 L10 R138 Ferrite Bead 600 1000pF ID 2 Q 1 122 R64 GND CURRENT CONNECTIONS 220 48 1206 PACKAGE NC GND Ferrite Bead 600oh R71 L11 TP6 V3P3 V G2 4 7K M Loes 7 1000 V3P3 OFF PAGE OFF PAGE OUTPUTS INPUTS VA VB GND gt IAP V3P3 __ gt gt IBN gt gt ICP IDP VA_IN gt gt gt NEUTRAL Wednesday February 13 Figure 4 2 TERIDIAN D6534T14A2 Demo Board Electrical Schematic 2 3 2005 2007 TERIDIAN Semiconductor Corporation V2 0 T ETSIDIAN SEMICONDUCTOR CORP 71M6534H Demo Board User s Manual PULSE OUTPUT V2P5 COM3 1 COMI UART RX SEG28 DIO08 DI
43. Energy reading at 0 0 CAL IC 16384 16384 Energy reading at 60 0 CAL VC 16384 16384 Energy reading at 60 PHADJ C Energy reading at 180 Voltage error at 0 Expected voltage V Measured voltage V Enter values in yellow fields REV 4 2 Date 10 25 2005 Author WJH Current lags voltage inductive 60 Current 60 Current leads voltage capacitive Positive direction 7 2 Voltage Generating Energy Using Energy Readings Enter O if the error is 096 enter 5 if meter runs 5 fast enter 3 if meter runs 396 slow Figure 2 4 Calibration Spreadsheet for Five Measurements Page 50 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 Page 51 of 86 d J ERIDIAN Enter values in yellow fields Results will show in green fields SEMICONDUCTOR CORP Step 1 Enter Nominal Values Nominal CAL_V Resulting Nominal REV 4 3 Nominal CAL Values X 6 Date 11 18 2005 Kh Wh 0 440 Author WJH Calibration Frequency Hz Angle Sensitivity deg LSB IMAX incl ISHUNT 50Hz 5 60 04 PULSE_FAST PULSE SLOW NACC Step 2 VRMS Calibration Enter old CAL_VA Input Voltage Applied Measured Voltage CAL_Vx Step 3 Current Gain and Phase Calibration 5 60E 04 old PHADJ Old CAL Ix Error 60 Error 60 Error 0 Error 180 Phase Error 0 0547319 0 1647659 0 1533716 PHADJ CAL Ix 17005 641 16981 934 17208 457 Step 4 Crosstal
44. JIxXSQSUM 2 Deviation from Calibration reference temperature t LSB 0 1 Frequency of voltage selected by CE input If the selected voltage is below the sag threshold Frequency 0 LSB Hz Table 1 9 MPU Instantaneous Output Variables MPU STATUS WORD The MPU maintains the status of certain meter and related variables in the Status Word Status Word is located at address 0x21 The bit assignments are listed in Table 1 10 Status Indicates that all elements are in creep mode The CE s pulse variables CREEP will be jammed with a constant value on every accumulation interval to prevent spurious pulses Note that creep mode therefore halts pulsing even when the CE s pulse mode is internal MINVC Element C has a voltage below VThrshld This forces that element into creep mode 2 PB PRESS A push button press was recorded at the most recent reset or wake from a battery mode SPURIOUS An unexpected interrupt was detected MINVB Element B has a voltage below VThrshld This forces that element into creep mode MAXVA Element A has a voltage above VThrshldP 6 Element B has a voltage above VThrshldP Element C has voltage above VThrshldP Element A has a voltage below VThrshld This forces that element into MINVA creep mode It also forces frequency and main edge count to zero WD DETECT The most recent reset was a watchdog reset This usually indicates a software error
45. LSE RPULSE or OPT TX DIO2 general DIO When configured as TX this is capable of directly driving an LED for transmitting data in an IR serial interface Chip reset This input pin is used to reset the chip into a known state For normal RESET operation this pin is pulled low To reset the chip this pin should be pulled high This has an internal nominal current source pull down No external reset circuitry is necessary Page 82 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 Multi use pins configurable as either LCD SEG driver or SPI PORT Multi use pins configurable as either emulator port pins when ICE E pulled high or LCD SEG drivers when ICE E tied to GND J ERIDIAN Digital Pins Continued UART input UART output Enables Production Test Must be grounded in normal operation Push button input Should be at GND when not active A rising edge sets the _ flag It also causes the part to wake up if it is in SLEEP or LCD mode PB does not have an internal pull up or pull down S Pin types P Power O Output Input I O Input Output 120 119 118 117 CN CN CN F M t LL 5 lt 000000 55 az Lj lt ea muuuuudaoiuzzo mwor tzaozuaozu ozmamocouoz 02 4 06 6 58258926 1 SEG59 DIO39 SEGO E SEG5
46. M6534 Demo Boards provide a reset pushbutton that can be used when prototyping and debugging software see Figure 2 8 R1 and C1 are mounted very close to the 71 6534 In severe EMI environments be removed if the trace from the pushbutton switch to the RESETZ pin poses a problem For production meters the RESET pin should be directly connected to GND 71M6534 peu V3P3D Reset VBAT Switch 5 vaP3D 2 RESET 1000 13 Figure 2 8 External Components for RESET Page 54 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 2 4 3 OSCILLATOR 2 4 4 The oscillator of the 71M6534 drives a standard 32 768kHz watch crystal see Figure 2 9 Crystals of this type are accurate and do not require a high current oscillator circuit The oscillator in the 71 6534 has been designed specifically to handle watch crystals and is compatible with their high impedance and limited power handling capability The oscillator power dissipation is very low to maximize the lifetime of any battery backup device attached to the VBAT pin Figure 2 9 Oscillator Circuit JA It is not necessary to place an external resistor across the crystal EEPROMSs should be connected to the pins 0104 0105 see Figure 2 10 These pins can be switched from regular DIO to implement an 2 interface by setting the RAM register DIO EEX 0x2008 4 to 1 Pull up resistors
47. MPU Status Word Bit Assignment Page 37 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN MPU ACCUMULATION OUTPUT VARIABLES Accumulation values are accumulated from XFER cycle to XFER cycle see Table 1 11 They are organized as two 32 bit registers The first register stores the decimal number displayed on the LCD For example if the LCD shows 001 004 the value in the first register is 1004 This register wraps around after the value 999999 is reached The second register holds fractions of the accumulated energy with an LSB of 9 4045 10 VMAX IMAX In_ 8 Wh The MPU accumulation registers always hold positive values CLI commands with two question marks e g 3922 should be used to read the variables XRAM Word Description Address Whi Total Watt hours consumed imported Whe Total Watt hours generated exported Total VAR hours generated inverse consumed 0x46 Total Watt hours generated inverse consumed through element 0 0x36 VAHhi A Total VAR hours consumed through element 0 Ox4E VAHhe A Total VAR hours generated inverse consumed through element 0 Ox3E VAh A Total VA hours in element 0 0x30 Total Watt hours consumed through element 1 0x48 Total Watt hours generated inverse consumed through element 1 0x38 VAHhi B Total VAR hours consumed through element 1 0x50 VAHhe B Total VAR hours generated inverse consumed through element 1 0x40 Total VA hours in element 1 0x32
48. O 2 SEG20 Q DIO10 gt 43 DIO d 343 1A 1B 1C 1DP 8108 2F 2E 2D 33 27519 TS 5 2A 2B 2C 2DP 5 c55 0 1uF 6 7 inus 3A 3B 3C ce Ferrite 600 40 50 SEG28 DIO08 V3P3 9 4A 4B 4C 4DP C70 1000pF BAT_MODE C54 SEG64 DIO44 10 SEG12 NC SEG35 DIO1S 11 29759590 SEG33 DIO13 SEG34 DIO 14 12 5A 5B 5C 5DP SEG63 DIO43 Note 0 1uF 5 02 13 25 SEG65 DIO45 C29 R78 C19 SEGO1 14 asd s 52608 52600 15 52607 ee SEG38 DIOT8 16 7A 7B 7C 7DP SEG36 DIO16 U5 DIO 17 21 29 R113 sw2 R110 ON 18 8A 8B 8C 8DP RESET COMO a0 GND 100 RESET VIM 828 DP U8 C49 500900050090 1000 lt 22 CKTEST sSSSRRESSSERSISSOPSPUuEDODD o0 0 0 5 5 lt D 00 00 02 109 0 0 2 C31 16 9K 1 m 0 Sr eiue 6 2055 Bn 5888 055 45005445559909 6090 agaggaaagggo9ooooogpQoo gt GND BONS Ss V1 GND 1C LO LO LO C61 R106 0000 o 30 0 0 0 0 55 22 20 GND V3P3 5 9 E eo SEG75 DIO55 TM O 9 SEG74 DIO54 an SEG73 DIO53 P10 VB nn oa C21 SEG72 DIO52 1000pF SPI Interf
49. PROCEDURES Calibration requires that a calibration system is used i e equipment that applies accurate voltage load current and load angle to the unit being calibrated while measuring the response from the unit being calibrated in a repeatable way By repeatable we mean that the calibration system is synchronized to the meter being calibrated Best results are achieved when the first pulse from the meter opens the measurement window of the calibration system This mode of operation is opposed to a calibrator that opens the measurement window at random time and that therefore may or may not catch certain pulses emitted by the meter It is essential for a valid meter calibration to have the voltage stabilized a few seconds before the current is applied This enables the Demo Code to initialize the 71M6534 6534H and to stabilize the PLLs and filters in the CE This method of operation is consistent with meter applications in the field as well as with metering standards Each meter phase must be calibrated individually The procedures below show how to calibrate a meter phase with either three or five measurements The PHADJ equations apply only when a current transformer is used for the phase in question Note that positive load angles correspond to lagging current see Figure 2 2 During calibration of any phase a stable mains voltage has to be present on phase A This enables the CE processing mechanism of the 71M6534 6534H necessary t
50. SO V5 DBG R1OUT 50 R20UT R4 18 22 R3OUT 0 1uF V5 DBG GND DBG R5 V5 DB 10K ND DB C23 0 14 GND DBG Page 77 of 86 1 BJO NM gt ADUM 1100 ADUM 1100 10K NI Co V5 DBG UAR ND GND DBG Figure 4 10 Debug Board Electrical Schematic 2005 2007 TERIDIAN Semiconductor Corporation TERIDIAN SEMICONDUCTOR CORP V5_DBG C1 VDD1 VDD2 DIN GND2 VDD1 DOUT sw2 GND1 2 DISPLAY SEL 59 0 1uF GND_DBG V5_DBG C5 0 1uF GND_DBG R2 D2 V5 DBG 0 1uF 0 14 16 STATUS LEDs O 1uF DIO01 C20 DIO02 5 5 V3P3 ND D ND 9 x 0 14 i 5 E d R TX Q D C21 DD B N E 5 Q D ROME HEADER 8X2 UART_RX_T DEBUG CONNECTOR R6 0 V2 0 jJ ENIDIAN Cc 7 PED TET 755 n EXT SUPPLY EYTE BLASTER i ea EE OTS Figure 4 12 Debug Board Bottom View Page 78 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 41 Figure 4 14 Debug Board Middle Layer 1 Ground Plane Page 79 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual Figure 4 16 Debug Board Bottom Trace Layer Page 80 of 86 2005 2007 TERIDIAN Semiconducto
51. Serial Command 17 1 8 2 Using the Demo Board for Energy 25 1 8 3 Adjusting the Kh Factor for the Demo nennen nnne 25 1 8 4 Adjusting the Demo Boards to Different Current Transformers 26 1 8 5 Adjusting the Demo Boards to Different Voltage Dividers 26 19 Pa EE Du 27 1 9 1 General Calibration 27 1 9 2 ai o A 28 1 9 3 Updating the 6534 demo hex 28 1 9 4 Updating Calibration Data in Flash Memory without Using the ICE or a Programmer 28 1 9 5 A Automatic Calibration 29 1 9 6 Loading the 6534 demo hex file into the Demo 29 190 77 Programming Interface of the 71M6534 6534H 31 1 10 COC 32 1 10 1 o EN mmm 32 1 10 2 Important Demo Code MPU Parameters 33 1 10 3 Useful CLI Commands Involving the MPU and 39 1 11 Using the ICE In Circult EmulalQL 39 2 APPLICATION 1 crate sess 41 21
52. T14A2 Demo Board Ground 73 Figure 4 9 TERIDIAN D6534T14A2 Demo Board V3P3 nns 74 Figure 4 10 Debug Board Electrical 77 Figure 4 11 Debug Board Top 78 Figure 4 12 Debug Board Bottom 78 Figure 4 13 Debug Board Top Signal 79 Figure 4 14 Debug Board Middle Layer 1 Ground 79 Figure 4 15 Debug Board Middle Layer 2 Supply 80 Figure 4 16 Debug Board Bottom Trace Layer 80 Figure 4 17 TERIDIAN 71M6534H 100 Pinout top 83 List of Tables Table 1 1 Jumper settings on Debug 13 Table 1 2 Straight cable 13 Table 1 3 Null modem cable 13 Table 1 4 Selectable Display ais 14 Table 1 5 CE RAM Locations for Calibration 27 Table 1 6 Flash Programming Interface 2 nnn nnn nn enar nnne nnn nnns 31 Table 1 7 MPU Input Parameters for Metering 34 Table 1 8 Selectable P
53. UM1100AR 237 2202K ND 54400 0025 PMS4400 0031PH HNZ440 Table 4 2 Debug Board Bill of Material Manufacturer TDK AVX AVX LITEON Sullins Switchcraft AMP Sullins Panasonic Panasonic N A Panasonic Panasonic Keystone ADI MAXIM Keystone Building Fasteners Building Fasteners Building Fasteners 2005 2007 TERIDIAN Semiconductor Corporation Vendor Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key N A Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key Digi Key SEMICONDUCTOR CURE Vendor P N 445 1349 1 ND 478 1687 1 ND 478 1673 1 ND 160 1414 1 ND 51011 36 5 1152 2100 54208 P10KACT ND P1 0KACT ND N A P8051SCT ND 5011K ND ADUM1100AR ND MAX3237CAI ND 2202K ND H342 ND H343 ND H216 ND V2 0 71M6534H Demo Board User s Manual 5Vdc EXT SUPPLY v5 DBG J1 C7 RAPC712 TP5 TP6 TP TP a a 2 DB9 RS232 5 GND DBG en 9 JP 10uF 16V B Case 4 HDR2X1 V5 DBG 8 3 7 NORMAL 1 2 GND DBG 6 1 0 1uF HDR2X1 x RS232 TRANSCEIVER MAX3237CAI GND DBG C14 232VP1 27 28 232C1P1 C45 0 1uF V5_DBG 25 232C1M1 C19 232 1 4 1 232C2P1 C18 0 1uF 0 14 3 232 2 1 GND DBG G2 GND DB TX232 24 TXISO 23 ND DB T2IN 25 T3IN 7 T5IN 16 RX232 74 RXI
54. ace SEG71 DIO51 20 0K 196 100pF SEG15 Note Place TP17 SEG15 4 C24 C25 Y1 GND SLVR IDP SEG14 close to IC Note Place N SEG13 05 GND C31 114 C21 SEG12 C3 BN 71M6534H 120TQFP DIO13 C24 O 1uF BP SEDIS DD Note Populate J14 or XIN GND AN zia 46 01026 J17 but not both ND SEG63 DIO43 C57 im SEGGS DIO45 09 32 768KHZ PTT 5 08 7 GND GND XOUT DIO1 OPT SEG7 MUX SYNC J14 1000 XIN GNDD SEG50 DIO30 PSDI VBAT ND XIN SEG6 PSDI 6771016 J P VBAT tape OPTICAL I F XOU TEST SEG36 DIO16 49 51029 Q b XOUT SEG49 D1029 54701044 5 E PB SEG64 DIO44 SEG35 DIO15 O C80 E RST SEG42 DIO22 MRX SEG35 DIO15 SEG34IDIO14 q 1000pF SEG11 E SEG34 DIO14 RXTX q 0 4 SEG61 DIO41 SEG55 E ISYNC 5 02 2 1 E TCLK SEG62 DIO42 SEG02 SEG01 8 0 SEG10 E_TCLK 5 01 lt 00 E RXTX E 3 GND SEG32 DIQ12 5 0000 gt 5 00 q D SLUG CX 229 9 R1 R111 C x Mou 410 2 rote X Gao eo E TCLK M 8688 9 oPppuuuuaa 0 BASER ono 5 89 EMULATOR 1K RESET 0 R103 1 C53 VBAT E RST RXTX 2 10K 100pF 0 1uF 10K 0 gt 0 gt 00000000 00000009000 00 C69 K 3 C20 TP TP14 ND 5 TP ZR E OFF PAGE 22 GND LEN 6 Note C53 26 27 and R107 cl
55. al transformer is to be used scaling techniques similar to those applied for the current transformer should be used In the following example we assume that the line voltage is not applied to the resistor divider for VA formed by R15 R21 R26 R31 and R32 but to a voltage transformer with a ratio N of 20 1 followed by a simple resistor divider We also assume that we want to maintain the value for VMAX at 600V to provide headroom for large voltage excursions When applying VMAX at the primary side of the transformer the secondary voltage Vs is Vs VMAX Vs is scaled by the resistor divider ratio Rr When the input voltage to the voltage channel of the 71M6534 is the desired 176 8mV Vs is then given by Vs 176 8mV Resolving for Rr we get Rr VMAX 176 8mV 600V 30 176 8mV 170 45 This divider ratio can be implemented for example with a combination of one 16 95kQ and one 100Q resistor Page 26 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 1 9 1 9 1 ERIDIAN If potential transformers PTs are used instead of resistor dividers phase shifts will be introduced that will re quire negative phase angle compensation TERIDIAN Demo Code accepts negative calibration factors for phase CALIBRATION PARAMETERS GENERAL CALIBRATION PROCEDURE Any calibration method can be used with the 71M6534 6534H chips This Demo Board User s Manual presents calibration methods with three or fiv
56. ase adjust angle vector is rotated by multiplying by a 2x2 matrix 5 sin The linear adjustment vector is Wh plied icd reasured VARA V 15 the real part of multiplying the rotation matrix by the linear adjustment vector applied V gain h applied 11 1 COS iid 0 VARh measured gain measured The term after the sign is negligible since the applied reactive energy is near zero so igain becomes h i COS 9 Wh measured gain Furthermore Wh measured COS 9 TD measured which simplifies the equation for igai to Wh l ain VAh applied measured V ain VANmeasured IS easy to calculate from Whmeasurea and VARhmeasurea and it turns out to have good linearity and repeatability due to the signal processing performed in the 71M65XX chip VARh measured measured VAR measured The CE uses the value 16384 for unity gain We can then substitute 16384 CAL n measured gain Page 85 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN 4 4 1 REVISION HISTORY 1 0 10 16 2007 Document Creation for D6534T14A1 board 1 1 11 27 2008 Updated schematics and values used for capacitors at XIN XOUT pins 20 5 28 2008 Updated document to match board revision 2 D6534T14A2 Schematics BOM b
57. cessing the Trim Control Registers INTR Description Allows user to read trim and fuse values Usage T option Command Read fuse 4 combinations 4 5 Read fuse 5 TRIMBGA T6 4 Example Reads the TRIMM fuse pas These commands are only accessible for the 71M6534H 0 1 parts When used on a 71M6534 PS 0 5 part the results will be displayed as zero Reset Commands Usage W Halts the Demo Code program thus suppressing the triggering of the hardware watchdog timer This will cause a reset if the watchdog timer is enabled Page 23 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Commands for Controlling the Metering Values Shown on the LCD Display METER DISPLAY Comment CONTROL LCD Description Allows user to select internal variables to be displayed usage Wh Total Consumption display wraps around at 999 999 Wh Total Consumption display wraps around at 999 999 Temperature C delta from nominal Frequency H2 M8 M9 Command combinations M3 phase Wh Total Consumption display wraps around at 999 999 M4 phase Wh Total Inverse Consumption display wraps around at 999 999 M5 phase VARh Total Consumption display wraps around at 999 999 M6 phase Total Inverse Consumption display wraps around at 999 999 m Operating 000000 M13 1 Main edge count accumulated
58. d with Debug Board Basic Connections The D6534T14A2 Demo Board block diagram is shown in Figure 1 2 It consists of a stand alone meter Demo Board and an optional Debug Board The Demo Board contains all circuits necessary for operation as a meter including display calibration LED and internal power supply The Debug Board provides magnetic isolation from the meter and interfaces to a PC through a 9 pin serial port For serial communication between the PC and the TERIDIAN 71M6534H the Debug Board needs to be plugged with its connector J3 into connector J2 of the Demo Board Connections to the external signals to be measured i e AC voltages and current signals derived from shunt resistors or current transformers are provided on the rear side of the demo board see Figure 3 1 Caution It is recommended to set up the demo board with no live AC voltage connected and to connect live AC voltages only after the user is familiar with the demo system S input signals are referenced to the V3P3 3 3V power supply to the chip Page 11 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 External Current DEMONSTRATION METER ERIDIAN
59. de when the Auto Cal function is executed This procedure requires the following steps 1 Establish load voltage and current from the calibration system The load angle must be exactly 0 00 degrees 2 Enter the expected voltage and current using CLI commands For example to calibrate for 240V 30A for two seconds enter F 2 2400 300 3 Issue the command CLB 4 Wait the specified number of seconds Check the calibration factors established by the automatic procedure Page 47 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 2 2 4 CALIBRATION PROCEDURE FOR ROGOWSKI COIL SENSORS Demo Code containing CE code that is compatible with Rogowski coils is available from TERIDIAN Semi conductor Rogowski coils generate a signal that is the derivative of the current The CE code implemented in the Rogowski CE image digitally compensates for this effect and has the usual gain and phase calibration adjustments Additionally calibration adjustments are provided to eliminate voltage coupling from the sensor input Current sensors built from Rogowski coils have relatively high output impedance that is susceptible to capacitive coupling from the large voltages present in the meter The most dominant coupling is usually capacitance between the primary of the coil and the coil s output This coupling adds a component proportional to the derivative of voltage to the sensor output This effect is compensated by th
60. der for selection of the firmware function in battery mode Plugging a jumper across pins 2 and 3 will 16 JP16 BAT MODE select 9600bd and will also disable the battery modes Plugging a jumper across pins 1 and 2 will select 300bd and enable battery modes DIO3 R 3 pin header allowing access to the DIOO3 pin 3 pin header for selection of the voltage for the ICE E pin 19 JP7 ICE EN A jumper is normally installed between V3P3D and ICE E enabling programming of the 71 6534 JP13 JP14 01056 01057 2 pin headers providing access to the DIO pins 01056 JP15 DIO58 DIO57 and 01058 0U8 LCD with eight digits and 14 segments per digit DEBUG 8X2 header providing access for the Debug Board 71 6534 LQFP 120 package CKTEST 2 pin header providing access to the TMUXOUT and TMUXOUT CKTEST signals 2X5 header providing access to the SPI interface of the GND GND test point 3 pin header used to enable or disable the hardware TP10 watchdog timer WDT The WDT is disabled by plugging as jumper between V1_R and V3P3 default and enabled by plugging as jumper between V1_R and GND 2x10 high density connector port for connecting the Signum ICE ADM 51 or the 2 programmer 6 pin header providing access to the essential signals of 29 J17 the emulator interface IBN IBP 2 pin headers providing access to the current input pins of ICN ICP channel A B C and D used in differential
61. e hexadecimal value 0x4005 decimal 16389 in the CE RAM location controlling the gain of the voltage channel for phase A CAL_VA Constant Description Adjusts the gain of the voltage channels 16384 is the typical value The gain is directly proportional to the CAL parameter Allowed range is 0 to 32767 If the gain is 1 slow CAL should be increased by 1 Adjusts the gain of the current channels 16384 is the typical value The gain is directly proportional to the CAL parameter Allowed range is O to 32767 If the gain is 1 slow CAL should be increased by 1 PHADJ A This constant controls the CT phase compensation No compensation PHADJ B occurs when PHADJ 0 As is increased more compensation is PHADJ C introduced Table 1 5 CE RAM Locations for Calibration Constants Page 27 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 1 9 2 CALIBRATION MACRO FILE 1 9 4 The macro file in Figure 1 6 contains a sequence of the serial interface commands It is a simple text file and can be created with Notepad or an equivalent ASCII editor program The file is executed with HyperTerminal s Text File command CEO disable CE 1102416022 CAL IA gain CAL 16384 1112416381 CAL VA gain CAL VA 16384 113 16370 CAL VB 114 415994 gain CAL IC 16384 115 16376 CAL VC gain CAL VC 16384 118 115 PHADJ A default 0 119 4113 PHADJ default 0 1A
62. e measurements as recommended methods because they work with most manual calibration systems based on counting pulses emitted by LEDs on the meter Naturally a meter in mass production will be equipped with special calibration code offering capabilities beyond those of the Demo Code It is basically possible to calibrate using voltage and current readings with or without pulses involved For this purpose the MPU Demo Code can be modified to display averaged voltage and current values as opposed to momentary values Also automated calibration equipment can communicate with the Demo Boards via the serial interface and extract voltage and current readings This is possible even with the unmodified Demo Code A complete calibration procedure is given in section 2 2 of this manual Regardless of the calibration procedure used parameters calibration factors will result that will have to be applied to the 71M6534 6534H chip in order to make the chip apply the modified gains and phase shifts necessary for accurate operation Table 1 5 shows the names of the calibration factors their function and their location in the CE RAM Again the command line interface can be used to store the calibration factors in their respective CE RAM addresses For example the command gt 110 16302 stores the decimal value 16302 the CE RAM location controlling the gain of the current channel CAL A for phase A The command gt 11 4005 stores th
63. e voltage coupling calibration coefficients As with the CT procedure the calibration procedure for Rogowski sensors uses the meter s display to calibrate the voltage path and the pulse outputs to perform the remaining energy calibrations The calibration procedure must be done to each phase separately making sure that the pulse generator is driven by the accumulated real energy for just that phase In other words the pulse generator input should be set to WhA WhB or WhC depending on the phase being calibrated In preparation of the calibration all calibration parameters are set to their default values VMAX and are set to reflect the system design parameters WRATE and PUSE SLOW PULSE FAST are adjusted to obtain the desired Kh Step 1 Basic Calibration After making sure VFEED A VFEED B and VFEED C are zero perform either the three measurement procedure 2 2 1 or the five measurement calibration procedure 2 2 2 described in the CT section Perform the procedure at a current large enough that energy readings are immune from voltage coupling effects The one exception to the CT procedure is the equation for PHADJ after the phase error 05 has been calculated use the PHADJ equation shown below Note that the default value of PHADJ is not zero but rather 3973 PHADJ previous Ps 17867 0 If voltage coupling at low currents is introducing unacceptable errors perform step 2 below to select non zero values
64. ectable pulse sources are listed in Table 1 8 This address contains a number that points to the selected pulse PULSEY_SRC source for the YPULSE output Selectable pulse sources are listed in Table 1 8 SCAL Count of accumulation intervals for auto calibration Applied voltage for auto calibration LSB 0 1V rms of AC signal on VCAL applied to all elements during calibration Applied current for auto calibration LSB 0 1A rms of AC signal 0x11 300 ICAL Aii to all elements during calibration Power factor must be 75087832 VTHRSHLD Voltage to be used for creep detection measuring frequency zero crossing etc Pulse width in us 2 PulseWidth 1 397 OxFF disables this EBEN PULSE feature Takes effect id at start up Nomina reference temperature i e the temperature at which EM TEMP NOM calibration occurred LSB Units of TEMP RAW from CE The count of accumulation intervals that the neutral current must 0x15 NCOUNT be above NTHRSHLD required to set the excess neutral error bit The neutral current threshold 0x16 INTHRSHLD LSB JIxXSQSUM 2 Table 1 7 MPU Input Parameters for Metering OxOC OxOD OxOE OxOF 0 10 Page 34 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Any of the values listed in Table 1 8 can be selected for as a source for PULSEW and PULSER The designation source refers to values imported by the consume
65. ed before they are soldered to the board The TGP1 gang programmer suitable for high volume production is available from TERIDIAN It must be equipped with LQFP 120 sockets In Circuit Emulator If firmware exists in the 71M6534 6534H flash memory it has to be erased before loading a new file into memory Figure 1 7 and Figure 1 8 show the emulator software active In order to erase the flash memory the RESET button of the emulator software has to be clicked followed by the ERASE button Once the flash memory is erased the new file can be loaded using the commands File followed by Load The dialog box shown in Figure 1 8 will then appear making it possible to select the file to be loaded by clicking the Browse button Once the file is selected pressing the OK button will load the file into the flash memory of the 71M6534 6534H IC At this point the emulator probe cable can be removed Once the 71M6534 6534H IC is reset using the reset button on the Demo Board the new code starts executing Flash Programmer Module TFP 2 Follow the instructions given in the User Manual for the TFP 2 Page 29 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual Signum Systems Wemu51 ADM51 Emulator test File Edit Debug Project Signum Systems Wemu51 Page 30 of 86 Address 0102 Dec 92 02 76 6D 02 AF Program 1 Address 1 Figure 1 8 Emulator Window Showing
66. eec 0260000006 2100000066 d gh Pd n Figure 4 8 TERIDIAN D6534T14A2 Demo Board V3P3 Layer V2 0 Page 74 of 86 2005 2007 TERIDIAN Semiconductor Corporation jJ ENIDIAN m 19 e 1 5 r amn AE kii 4 4 STERIDIAN SEMICONDUCTOR CORE ED e Figure 4 9 TERIDIAN D6534T14A2 Demo Board Bottom View Page 75 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 4 2 DEBUG BOARD DESCRIPTION Item 0 1 8 1 NO 1 1 2 4 1 1 1 4 2 1 1 1 2 5 1 4 4 2 2 Page 76 of 86 Reference Value C1 C3 C5 C10 C12 C23 0 1uF C4 C11 D2 D3 JP1 JP2 JP3 JP4 J1 J2 J3 R1 R5 R7 R8 R2 R3 R4 R6 SW2 5 6 U1 U2 U3 U5 U6 UA 33uF 10V 10uF 16V B Case LED HDR2X1 RAPC712 DB9 HEADER 8X2 10K 1K NC 0 PB Switch test point ADUM1100 MAX3237CAI spacer 4 40 1 4 screw 4 40 5 16 screw 4 40 nut PCB Footprint 0805 1812 1812 0805 2x1pin DB9 8x2pin 0805 0805 0805 0805 PB TP SOIC8 50028 P N C2012X7R1H104K TAJB336K010R TAJB106K016R LTST C170KGKT PZC36SAAN RAPC712 A2100 ND PPTCO82LFBN ERJ 6GEYJ103V ERJ 6GEYJ102V N A ERJ 6GEYOROOV EVQ PJX05M 5011 AD
67. emiconductor Corporation V2 0 J ERIDIAN 2212 EEPROM co M 55 24 56 2 4 6 ACS Em 56 25 POSING ING DEMO 57 2 5 1 Pr UUM OAL MERE 57 52 51 9 P 58 RC rc 59 2 5 4 Hardware Watchdog Timer 59 Tr 59 26 Application opua R 60 3 HARDWARE DESGCRIPTIODB dicis anon ccc oer dee 61 3 1 D6534T14A2 Board Description Jumpers Switches and Test 22 1 61 92 Board Hardware 5 5 5 2 64 4 hix b M 65 4 1 D6534T14A2 Schematics PCB Layout and 66 42 Debug Board DescrHplIOI essent vac ums 76 AS DESCHIOUOM ERE too o t 81 4 Fo m
68. ests of the LCD interface can be performed with the Demo Board using the serial command line interface Setting the LCD EN register to 1 enables the display outputs Register Name Address bits LCD EN 2021 5 RAW Enables the LCD display When disabled VLC2 VLC1 and VLCO are ground as are the COM and SEG outputs To access the LCD EN register we apply the following CLI commands gt RI21 Reads the hex value of register 0x2021 gt 25 Response from Demo Code indicating the bit 5 is set gt 21 5 Writes the hex value 0x05 to register 0x2021 causing the display to be switched off gt 21 25 Sets the LCD EN register back to normal The LCD CLK register determines the frequency at which the COM pins change states A slower clock means lower power consumption but if the clock is too slow visible flicker can occur The default clock frequency for the 71M6534 6534H Demo Boards is 150Hz LCD CLK 01 Register Name Address bits LCD CLKT 1 0 2021 1 0 R W Sets the LCD clock frequency i e the frequency at which SEG and COM pins change states S fw 32 768Hz 00 f 2 01 2 10 1 27 11 28 To change the LCD clock frequency we apply the following commands gt RI21 Reads the hex value of register 0x2021 gt 25 Response from Demo Code indicating the bit 0 is set and bit 1 is cleared Page 59 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 jFETSIDIAN gt 21 24 Wri
69. evisions 1M6534 or 1 6534 chip revision A03 Demo Kit firmware revision 4p6q Demo Boards D6534T14A2 1 06 SUGGESTED EQUIPMENT NOT INCLUDED For functional demonstration PC w MS Windows versions XP 2000 equipped with RS232 port COM port DB9 connector For software development MPU code Signum ICE In Circuit Emulator ADM 51 see update information in section 1 11 http www signum com e Keil 8051 Compiler kit CA51 http www keil com c51 ca51 kit htm http www keil com product sales htm 1 7 DEMO BOARD TEST SETUP Figure 1 1 shows the basic connections of the Demo Board plus Debug Board with the external equipment for desktop testing i e without live power applied For desktop testing both the Demo and Debug board may be powered with their SVDC power supplies Page 10 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 11 6534 Demo Board User s Manual 1077 4 TW Power 5VDC Board Two Power Supplies LN 9 100VAC to 240VAC 7 5V 1ADC Output Powen5VDC ra 2 y 01 gt 2 Ale ras Gu TT T gt u mra 2 o9 11111111 34111414 _______ Im 7 Host Figure 1 1 TERIDIAN D6534T14A2 Demo Boar
70. f 2500 1 are outlined below 1 The formula Rx 176 8mV IMAXIN is applied to calculate the new resistor Rx We calculate Rx to 2 1150 2 Changing the resistors R24 R25 R106 R107 to a combined resistance of 2 1150 for each pair will cause the desired voltage drop of 176 8mV appearing at the IB or IC inputs of the 71M6534 Simply scaling is not recommended since peak voltages at the 71M6534 inputs should always be in the range of 0 through 250 equivalent to 176 8mV rms If a CT with a much lower winding ratio than 1 2 000 is used higher secondary currents will result causing excessive voltages at the 71M6534 inputs Conversely CTs with much higher ratio will tend to decrease the useable signal voltage range at the 71M6534 inputs and may thus decrease resolution 1 8 5 ADJUSTING THE DEMO BOARDS TO DIFFERENT VOLTAGE DIVIDERS The 71M6534 Demo Board comes equipped with its own network of resistor dividers for voltage measurement mounted on the PCB The resistor values are 2 5477MQ for channel A R15 R21 R26 R31 combined and 750 R32 resulting in a ratio of 1 3 393 933 This means that VMAX equals 176 78mV 3 393 933 600V A large value for VMAX has been selected in order to have headroom for overvoltages This choice need not be of concern since the ADC in the 71M6534 has enough resolution even when operating at 120Vrms If a different set of voltage dividers or an external voltage transformer potenti
71. is adjustment is used to set the oscillator frequency at room temperature close to the target ideal value Adjusting ADJ 6 0 will change the time base used for energy measurements and thus slightly influence these energy measurements Therefore it is recommended to adjust the RTC before calibrating a meter e Digital rate adjustment is used to dynamically correct the oscillator rate under MPU control This is necessary when the IC is at temperatures other than room temperature to correct for frequency deviations The analog rate adjustment uses the RAM register ADJ 6 0 which trims the crystal load capacitance Setting RTCA ADJ 6 0 to 00 minimizes the load capacitance maximizing the oscillator frequency Setting ADJ 6 0 to maximizes the load capacitance minimizing the oscillator frequency The maximum adjustment is approximately 60 The precise amount of adjustment will depend on the crystal and on the PCB properties The adjustment may occur at any time and the resulting clock frequency can be measured over a one second interval using a frequency counter connected to the TMUXOUT pin while 0x10 or 0x11 is selected for the I O RAM register 7MUXT 4 0 Selecting 0x10 will generate a 1 second output selecting Ox11 will generate 4 output The 4 second output is useful to adjust the oscillator at high accuracy It is also possible to set 4 0 to 0 1 to generate a 32 768kHz output
72. k Calibration Equalize Gain for 0 and 180 VRMS 240 IRMS 0 30 Old VFEEDx Error Odeg Error 180deg VFEEDx 1 Rogowski coils have significant crosstalk from voltage to current This contributes to gain and phase errors 2 Therefore before calibrating a Rogowski meter a quick 0 load line should be run to determine at what current the crosstalk contributes at least 1 error 3 Crosstalk calibration should be performed at this current or lower 4 If crosstalk contributes an EO error at current Ix there will be a 0 1 error in E60 at 15 Ix Figure 2 5 Calibration Spreadsheet for Rogowski coil 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN 2 2 6 COMPENSATING FOR NON LINEARITIES Nonlinearity is most noticeable at low currents as shown in Figure 2 6 and can result from input noise and truncation Nonlinearities can be eliminated individually for each channel by using the QUANT variables QUANT A QUANT b QUANT C lt gt O 86 5 A gt O e gt Figure 2 6 Non Linearity Caused by Quantification Noise The error can be seen as the presence of a virtual constant noise current Assuming a noise current of 10mA this current hardly contributes any error at currents of 10A and above whereas the same noise current be comes dominant at small measurement currents The value that should to be used for QUANT
73. log when starting a 6534 based design Using the ICE with project settings copied from a 6521 or 651X de signs will lead to erratic results For details on installing the WEMU51 program and on creating a project see the SUG 653X Software Users Guide Page 39 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual SEMICONDUCTOR CORP Page 40 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN APPLICATION INFORMATION 2 1 CALIBRATION THEORY A typical meter has phase and gain errors as shown by Axi and in Figure 2 1 Following the typical meter convention of current phase being in the lag direction the small amount of phase lead in a typical current sensor is represented as s The errors shown in Figure 2 1 represent the sum of all gain and phase errors They include errors in voltage attenuators current sensors and in ADC gains In other words no errors are made in the input or meter boxes INPUT ERRORS METER lems 70s gt IDEAL I ACTUAL I Ay is phase lag s is phase lead wu IDEAL 0 ACTUAL IV 8 Vnus V gt IDEAL V ACTUAL V Axy ERROR ACTUAL IDEAL _ ACTUAL 1 IDEAL IDEAL Figure 2 1 Watt Meter with Gain and Phase Errors During the calib
74. ly AC signal is used to power the demo 4 JP1 PS SEL O board When not installed the board must be powered by an external DC supply connected to J1 Normally installed Neutral The neutral wire connect to the spade terminal located on the bottom of the board 5 header for access to the optical interface UART 1 OPT RX For better EMI performance jumpers TX OUT installed from both OPT RX and OPT TX OUT to V3P3D 7 Plug for connecting the external 5 VDC power supply Three pin header that allows the connection of a battery If no battery is connected to the VBAT pin a jumper should be placed between pins 1 and 2 default setting of the VA IN IN VC IN 3 J4 J6 J8 JP8 VBAT Demo Board A battery can be connected between terminals 2 and 3 Page 61 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Reference re 3 pin header for selecting the output driving the VARh JP20 pulse LED 1 2 RPULSE 2 3 YPULSE A jumper is normally installed from pin 1 to pin 2 TP20 2 pin header enabling access to the selected pulse output DIO8 DIO6 OPT_TX and V3P3 2 pin header enabling access to the selected pulse output DIO7 DIO9 and V3P3 3 pin header for selecting the output driving the Wh pulse 13 JP19 SEG28 01008 LED 1 2 WPULSE or OPT TX 2 3 XPULSE A jumper is normally installed from pin 1 to pin 2 3 pin hea
75. n 0 1 C Provided for optional code RTC adjust squared by temperature 1ppb AT in 0 1 C Provided for optional code Page 33 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 ERIDIAN XRAM Word Default Description Address Value This address contains a number that points to the selected pulse 0x07 PULSEW SRC source for the Wh output Selectable pulse sources are listed in Table 1 8 This address contains a number that points to the selected pulse 0x08 4 PULSER SRC source for the VARh output Selectable pulse sources are listed in Table 1 8 The nominal external RMS voltage that corresponds to 250mV 0x09 6000 VMAX peak at the ADC input The meter uses this value to convert internal quantities to external LSB 0 1V The nominal external RMS current that corresponds to 250mV Ox0A 2080 IMAX peak at the ADC input for channel A The meter uses this value to convert internal quantities to external LSB 0 1A PPM C 26 84 Linear temperature compensation A positive value will cause the meter to run faster when hot This is applied PIME to both V and and will therefore have a double effect on products PPM C 1374 Square law compensation A positive value will PPMC2 cause the meter to run faster when hot This is applied to both V and and will therefore have a double effect on products This address contains a number that points to the selected pulse PULSEX_SRC source for the XPULSE output Sel
76. nformation contained herein Page 3 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 ENDAN 71M6534H Demo Board User s Manual SEMICONDUCTOR CORP 71M6534H 3 Phase Energy Meter IC DEMO BOARD USER S MANUAL Page 4 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Table of Contents 1 CE THNG STARIE D ae E S 9 tr 9 1 2 Safety and ESD Precautions 9 13 DEMO ATE a 9 14 Board VONSIOINS mM 10 1 5 E 10 1 6 Suggested Equipment not Included iai Eae 10 Wey 5 10 1 7 1 POWer o 1 13 1 7 2 Cable for Serial Connection Debug 13 NP MEE QC AUC 14 1 74 15 1 3 5 s 16 1 8 1
77. o control the pulse count functions CP option Start pulse counting for time period defined with the combinations CPD command Pulse counts will display with commands M15 2 M16 2 PC C Clear the absolute pulse count displays shown with commands M15 1 M16 1 CPDn Set time window for pulse counters to n seconds n is interpreted as a decimal number CPD60 Set time window to 60 seconds et Pulse counts accumulated over a time window defined by the CPD command will be displayed by M15 2 or M16 2 after the defined time has expired Commands M15 1 and M16 1 will display the absolute pulse count for the W and VAR outputs These displays are reset to zero with the CPC command or the XRAM write 1 2 Commands M15 2 and M16 2 will display the number of pulses counted during the interval defined by the command These displays are reset only after a new reading as initiated by the CPA command Commands for Identification and Information Description Allows user to read information messages Usage 771 Displays complete version information The command is mainly used to identify the revisions of Demo Code and the contained CE code Commands for Controlling the RMS Values Shown on the LCD Display Page 21 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual SEMICONDUCTOR CORP Description Allows user to select meter RMS
78. o obtain a stable calibration Voltage ngog N b E Current lags voltage N Positive direction 60 Current 44 9 Current leads voltage Y capacitive 3 gu T 2 22 7 Voltage 222 Generating Energy Using Energy Figure 2 2 Phase Angle Definitions The calibration procedures described below should be followed after interfacing the voltage and current sensors to the 71M6534 6534H chip When properly interfaced the V3P3 power supply is connected to the meter neutral and is the DC reference for each input Each voltage and current waveform as seen by the 71M6534 6534H is scaled to be less than 250mV peak Page 45 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 2 2 1 CALIBRATION PROCEDURE WITH THREE MEASUREMENTS The calibration procedure is as follows 1 2 Page 46 of 86 All calibration factors are reset to their default values i e CAL_IA CAL_VA 16384 and PHADJ_A 0 An RMS voltage Vigea consistent with meter s nominal voltage is applied and the RMS reading Of the meter is recorded The voltage reading error Axv is determined as Vactual Videal Videal Apply the nominal load current at phase angles 0 and 60 measure the Wh energy and record the errors Eo AND Calculate the new calibration factors CAL
79. oard description and layout User s Manual This User s Manual contains proprietary product information of TERIDIAN Semiconductor Corporation TSC and is made available for informational purposes only TERIDIAN assumes no obligation regarding future manufacture unless agreed to in writing Demo Kits and their contents are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment including those pertaining to warranty patent infringement and limitation of liability TERIDIAN Semiconductor Corporation TSC reserves the right to make changes to this document at any time without notice Accordingly the reader is cautioned to verify the validity of schematics and firmware of designs based on this document TSC assumes no liability for applications assistance TERIDIAN Semiconductor Corp 6440 Oak Canyon Road Suite 100 Irvine CA 92618 5201 TEL 714 508 8800 FAX 714 508 8877 http www teridian com Page 86 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0
80. oard has to pass before being integrated into a Demo Kit Before going into the functional meter test the Demo Board has already passed a series of bench top tests but the functional meter test is the first test that applies realistic high voltages and current signals from current transformers to the Demo Board Figure 2 13 shows a meter connected to a typical calibration system The calibrator supplies calibrated voltage and current signals to the meter It should be noted that the current flows through the CT or CTs that are not part of the Demo Board The Demo Board rather receives the voltage output signals from the CT An optical pickup senses the pulses emitted by the meter and reports them to the calibrator Some calibration systems have electrical pickups The calibrator measures the time between the pulses and compares it to the expected time based on the meter Kh and the applied power Optical Pickup for Pulses Calibrator Figure 2 13 Meter with Calibration System TERIDIAN Demo Boards are not calibrated prior to shipping However the Demo Board pulse outputs are tested and compared to the expected pulse output Figure 2 14 shows the screen on the controlling PC for a typical Demo Board The number in the red field under As Found represents the error measured for phase A while the number in the red field under As Left represents the error measured for phase B Both numbers are given in percent This means that for the measu
81. oefficients in the following form Y CAL _ Y CALC Y CALC2 Re 10 100 1000 Note that the coefficients are scaled by 10 100 and 1000 to provide more resolution CORRECTION ppm Example For a crystal the deviations from nominal frequency are curve fitted to yield the coefficients a 10 89 b 0 122 and c 0 00714 The coefficients for the Demo Code then become after rounding since the Demo Code accepts only integers Y CAL 109 Y CALC 12 Y CALC2 7 Page 53 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 2 4 SCHEMATIC INFORMATION In this section hints on proper schematic design are provided that will help designing circuits that are functional and sufficiently immune to EMI electromagnetic interference 2 4 1 COMPONENTS FOR THE V1 PIN The V1 pin of the 71M6534 6534H can never be left unconnected A voltage divider should be used to establish that V1 is in a safe range when the meter is in mission mode V1 must be lower than 2 9V in all cases in order to keep the hardware watchdog timer enabled Pulling ICE_E up to V3P3 automatically disables the hardware watchdog timer GND O Figure 2 7 Voltage Divider for V1 On the 6534 Demo Boards this feature is implemented with resistors R83 R86 R105 and capacitor C21 See the board schematics in the Appendix for details 2 4 2 RESET CIRCUIT Even though a functional meter will not necessarily need a reset switch the 71
82. of 10 must be provided for both the SCL and SDA signals V3P3D 71M653X 10 DIO4 DIO5 Figure 2 10 EEPROM Circuit Page 55 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN 2 4 5 LCD The 71M6534 has an on chip LCD controller capable of controlling static or multiplexed LCDs Figure 2 11 shows the basic connection for LCDs Note that the LCD module itself has no power connection 71M653X segments commons Figure 2 11 LCD Connections 2 4 6 OPTICAL INTERFACE The 71M6534 1 is equipped with two pins supporting the optical interface OPT TX and OPT RX The TX can be used to drive a visual or IR light LED with up to 20mA a series resistor R2 in Figure 2 12 helps limiting the current The OPT RX pin can be connected to the collector of a photo transistor as shown in Figure 2 12 71M653X 100pF 100kQ C i Phototransistor 4 lt N N Q V3P3SYS LED R OPT_TX Figure 2 12 Optical Interface Block Diagram Page 56 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 jJ ENIDIAN 2 5 TESTING THE DEMO BOARD This section will explain how the 71M6534 6534H IC and the peripherals can be tested Hints given in this section will help evaluating the features of the Demo Board and understanding the IC and its peripherals 2 5 1 FUNCTIONAL METER TEST This is the test that every Demo B
83. performed 4 calibration procedure will automatically reset CE addresses used to store the calibration factors to their default values prior to starting the calibration Automatic calibration also reads the chip temperature and enters it at the proper CE location temperature compensation 5 CE addresses 0 10 to 0x15 and 0x18 to Ox1A will now show the new values determined by the auto calibration procedure These values can be stored in EEPROM by issuing the CLS command Tip Current transformers of a given type usually have very similar phase angle for identical operating conditions If the phase angle is accurately determined for one current transformer the corresponding phase adjustment coefficient PHADJ X can be entered for all calibrated units LOADING THE 6534 DEMO HEX FILE INTO THE DEMO BOARD Hardware Interface for Programming The 71M6534 6534H IC provides an interface for loading code into the internal flash memory This interface consists of the following signals E RXTX data E TCLK clock E RST reset ICE E ICE enable These signals along with V3P3D and GND are available on the emulator header J14 Production meters may be equipped with much simpler programming connectors e g a 6x1 header Programming of the flash memory requires a specific in circuit emulator the ADM51 by Signum Systems http www signumsystems com or the Flash Programmer TFP 2 provided by TERIDIAN Semiconductor Chips may also be programm
84. pulse In order to be used with a calibrated load or a meter calibration system the board should be connected to the AC power source using the spade terminals on the bottom of the board The current transformers should be connected to the dual pin headers on the bottom of the board The connection is the same for single ended or differential mode See chapter 3 1 for proper jumper settings The Kh value can be derived by reading the values for IMAX and VMAX i e the RMS current and voltage values that correspond to the 250mV maximum input signal to the IC and inserting them in the following equation for Kh Kh IMAX VMAX 66 1782 In 8 WRATE X 3 19902 Wh pulse The small deviation between the adjusted Kh of 3 19902 and the ideal Kh of 3 2 is covered by calibration The default values used for the 71M6534 6534H Demo Board are WRATE 171 IMAX 208 VMAX 600 8 1 controlled by SHUNT 15 2520 X 6 Explanation of factors used in the Kh calculation WRATE The factor input by the user to determine Kh IMAX The current input scaling factor i e the input current generating 176 8mVrms at the IA IB IC input pins of the 71M6534 176 8mV rms is equivalent to 250mV peak VMAX The voltage input scaling factor i e the voltage generating 176 8mVrms at the VA VB VC input pins of the 71M6534 In 6 The setting for the additional ADC gain 8 1 determined by the CE register SHUNT
85. r source E refers to energy exported by the consumer energy generation Number Pulse Source Description Number Pulse Source Description Default for o1 wm onary Default for Imported real energy on element VAROSUM as VARSUM_I Sum of imported reactive energy VARISUM 24 VAROSUM 1 Imported reactive energy on element A 7 VAR2SUM 25 VARISUM 1 Imported reactive energy on element B IOSQSUM 26 VARISUM I Imported reactive energy on element C EM INSQSUM WISUM E S penes real energy on element EN VOSQSUM W2SUM E pues real energy on element 13 VISOSUM VARSUM_E Sum of exported reactive energy 14 V2SOSUM 32 VAROSUM E Exported reactive energy on element A VARISUM E Exported reactive energy on element B VAR2SUM E Exported reactive energy on element C VAOSUM _ 11 12 13 17 Table 1 8 Selectable Pulse Sources MPU INSTANTANEOUS OUTPUT VARIABLES The Demo Code processes CE outputs after each accumulation interval It calculates instantaneous values such as VRMS IRMS W as well as accumulated values such as Wh VARh and VAh Table 1 9 lists the calculated instantaneous values Page 35 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN XRAM Word DESCRIPTION Address Vims from element O 1 2 LSB 2 lms from element 0 1 2 or neutral LSB
86. r Corporation V2 0 J ERIDIAN 4 3 71 6534 IC DESCRIPTION Power Ground Pins Analog ground This should be connected directly to the ground plane GNDD Digital ground This pin should be connected directly to the ground plane Analog power supply 3 3V power supply should be connected to this pin It must be the same voltage as V3P3SYS V3P3SYS P System 3 3V supply This pin should be connected to a 3 3V power supply connected to VBAT This pin is floating in LCD and sleep mode VBAT Battery backup power supply A battery or super capacitor is to be connected between VBAT and GNDD If no battery is used connect VBAT to V3P3SYS V2P5 Output of the internal 2 5V regulator 0 1uF capacitor to GNDA should be connected to this pin Auxiliary voltage output of the chip controlled by the internal 3 3V selection switch In mission V3P3D mode this pin is internally connected to V3P3SYS In BROWNOUT mode it is internally Analog Pins Name Type Description IAP IAN l IBP IBN Differential or single ended Line Current Sense Inputs These pins are voltage inputs to the ICN internal A D converter Typically they are connected to the outputs of current sensors In single ended mode the IXN pin should be tied to V3P3A IDP IDN VA VB Line Voltage Sense Inputs These pins are voltage inputs to the internal A D converter Typically VC
87. ration phase we measure errors and then introduce correction factors to nullify their effect With three unknowns to determine we must make at least three measurements If we make more measurements we can average the results A fast method of calibration will also be introduced in section 2 1 3 2 1 1 CALIBRATION WITH THREE MEASUREMENTS The simplest calibration method is to make three measurements Typically a voltage measurement and two Watt hour Wh measurements are made A voltage display can be obtained for test purposes via the command gt MR2 1 in the serial interface Let s say the voltage measurement has the error and the two Wh measurements have errors Eo and where Eo is measured with 0 and is measured with 60 These values should be simple ratios not percentage values They should be zero when the meter is accurate and negative when the meter runs slow The fundamental frequency is fo T is equal to 1 fs where fs is the sample frequency 2560 62Hz Set all calibration factors to nominal CAL A 16384 CAL VA 16384 PHADJA 0 Page 41 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN From the voltage measurement we determine that 1 gt 1 We use the other two measurements to determine and Ax E IV Ay Ay cos 0 9 2 08 9 1 IV cos 0 1 2a Ay COS Q Ec IV Ay Ay cos 60 1222 8
88. red Demo Board the sum of all errors resulting from tolerances of PCB components CTs and 71M6534 6534H tolerances was 2 8 and 3 8 a range that can easily be compensated by calibration Page 57 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 jJ ENIDIAN in b 1 2 Ve mi io Board User Manua WinBoard Meter Testing Serial No 3625 El xl Testing Functions Options Filelaraph Turbo Test S satan amp OS Exit AlteFa Cancel F2 AdjOpticFd Creep FS Mode F Skip FT View F3 Saye 10 Station 1 Total 0 Model 2300 _ CONTINUE MODE Test As Phase Rev Std Service Upper E Task Sequence AEP Lookup Form Defaultz Kh 1 005 Step Type Found Left Revs Ele Amp e Power Made Freg Lirnit 65 MEHHRENE 2 Voltage 2400 Amp 30 00 Test Seq n8 Seq Rev m 1 Rev AF Limits 1 AF Limi AL Limits 2 AL Limit service Single Phase Y D Reverse Power Start Delay 2 Optics Middle IR pp ppp pe Test Complete Figure 2 14 Calibration System Screen 2 5 2 EEPROM Testing the EEPROM provided on the Demo Board is straightforward and can be done using the serial command line interface CLI of the Demo Code To write a string
89. s assigned by the Demo Code on start up All MPU Input Parameters are loaded by the MPU at startup and should not need adjustment during meter calibration MPU Input Parameters for Metering XRAM Word Default m For each element if WSUM X VARSUM X of that element exceeds WCHEEP THH the sample values for that element are not zeroed Otherwise the accumulators for Wh VARh and VAh are not updated and the instantaneous value of IRMS for that element is zeroed 0x00 433199 ITHRSHLDA LSB 108080 2 The default value is equivalent to 0 08A Setting THRSHLDA to zero disables creep control Bit O Sets calculation mode 0x01 CONFIG 0 lt lt 1 JW VAR Bit 1 Clears accumulators for Wh VARh and VAh This bit need not be reset When the voltage exceeds this value bit 5 in the MPU status word is set and the MPU might choose to log a warning Event logs are not implemented in Demo Code 0x02 764569660 LSB JV0SQSUM 2 The default value is equivalent to 20 above 240Vrms When the current exceeds this value bit 6 in the MPU status word is set and the MPU might choose to log a warning Event logs are not implemented in Demo Code 2 0x03 2 5652520 PK ITHR LSB IOSQSUM 2216 The default value is equivalent to 20 above 0 4 0 Y CAL DEGO RTC adjust 100ppb Read only at reset in demo code 0x05 Y CAL DEGI RTC adjust linear by temperature 10ppb AT i
90. sion using the following parameters Port Speed 9600 bd or 300bd depending on jumper JP16 see section 3 1 Data Bits 8 Parity None Stop Bits 1 Flow Control XON XOFF HyperTerminal be found by selecting Programs Accessories gt Communications from the Windows start menu The connection parameters are configured by selecting File Properties and then by pressing the Configure button Port speed and flow control are configured under the General tab Figure 1 4 left bit settings are configured by pressing the Configure button Figure 1 5 right as shown below A setup file file name Demo Board Connection ht for HyperTerminal that can be loaded with File gt Open is also provided with the tools and utilities Port parameters can only be adjusted when the connection is not active The disconnect ineo button as shown in Figure 1 3 must be clicked in order to disconnect the port Flow Control irect method Meter DispNay Select Wh Consumption for all 5 6513 03 04 04 21 2005 Connected 0 02 05 ANSI yy 9600 a N 1 Figure 1 3 Hyperterminal Sample Window with Disconnect Button Arrow Page 15 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 jJ ENIDIAN PCTEL 2304WT 9x MDC Modem Connection Prefers 4 e Port Settings General Advanced Call preferences Operator assisted manual dial jl H Bits per second
91. sted in Table 1 6 are necessary for communication between the Flash Downloader or ICE and the 71M6534 6534H E TCLK Output from 71M6534 6534H Data clock E RXTX Bi directional Data input output E RST Input to the 71M6534 6534H Flash Downloader Reset active low ICE E Input to the 71M6534 6534H Enable signal for the ICE interface Must be high for all emulation or programming operations Table 1 6 Flash Programming Interface Signals The other signals accessible at the emulator interface connector J14 TBUS O E TBUS 3 2 E ISYNC be used for an optional trace debugger The E RST signal should only be driven by the Flash Downloader when enabling these interface signals The Flash Downloader must release E RST at all other times Page 31 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 JT ERIDIAN 1 10 DEMO CODE 1 10 1 DEMO CODE DESCRIPTION The Demo Board is shipped preloaded with Demo Code revision 4 6q or later in the 71M6534 or 71M6534H chip The code revision can easily be verified by entering the command i via the serial interface see section 1 8 1 Check with your local TERIDIAN representative or FAE for the latest revision The Demo Code offers the following features e provides basic metering functions such as pulse generation display of accumulated energy frequency date time and enables the user to evaluate the parameters of the metering IC such as accuracy harmonic performance
92. t EN PHADJ A 0 Expected voltage Measured voltage PHASE B fraction Energy reading at 0 j CAL IB 16384 16384 Energy reading at 60 CAL VB 16384 14895 Voltage error at 0 10 PHADJ B 0 Expected voltage Measured voltage PHASE C fraction Energy reading at 0 s 8 0 038 CAL IC 16384 16409 Energy reading at 60 0 09 CAL VC 16384 17031 Voltage error at 0 8 0 038 PHADJ C 5597 Expected NN 240 Measured NN 230 88 d J ERIDIAN REV 4 2 Date 10 25 2005 Author WJH Current lags voltage inductive 60 Current Positive direction 607 Current leads voltage capacitive E d Voltage Je Generating Energy Using Energy Readings Enter if the error is 0 enter 3 if meter runs 396 slow Figure 2 3 Calibration Spreadsheet for Three Measurements SEMICONDUCTOR AC frequency gt 50 click on yellow field to select from _ down i Energy reading at 0 CAL_IA 6220 Energy reading at 60 CAL VA 16384 16222 Energy reading at 60 PHADJ_A 371 Energy reading at 180 Voltage error at 0 Expected voltage V 240 242 4 Measured voltage V PHASEB fraction w Energy reading at 0 i CAL IB 16384 16223 Energy reading at 60 CAL VB 16384 16222 Energy reading at 60 PHADJ B Energy reading at 180 Voltage error at 0 Expected voltage 240 2424 Measured voltage V PHASE
93. tes the hex value 0x24 to register 0x2021 clearing bit 0 LCD flicker is visible now gt 21 25 Writes the original value back to LCD CLK 2 6 TERIDIAN APPLICATION NOTES Please contact your local TERIDIAN sales representative for TERIDIAN Application Notes Available application notes will be listed below in future editions of this document Page 60 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 SEMICONDUCTOR CORP 3 HARDWARE DESCRIPTION 3 1 D6534T14A2 BOARD DESCRIPTION JUMPERS SWITCHES AND TEST POINTS The items described in the following table refer to the flags in Figure 3 1 Table 3 1 D6534T14A2 Demo Board Description Reference EN VANPS Two pin header test points One pin is either the VA VB or VENOUS VC line voltage input to the IC and the other pin is V3P3A EE is pulled high which resets the IC into a known state 2 Multi function pushbutton used to wake up the 71M6534 from sleep mode into brownout mode In mission mode this button functions to control the parameters displayed on the LCD VA IN VB IN and IN are the line voltage inputs Each point has a resistor divider that leads to the re spective pin on the chip that is the voltage input to the A D These inputs connect to spade terminals located on the bottom of the board Caution High Voltage Do not touch these pins Two pin header When the jumper is installed the on board power supp
94. they are connected to the outputs of resistor dividers Comparator Input This pin is a voltage input to the internal comparator The voltage applied to V4 the pin is compared to the internal VBIAS voltage 1 6V If the input voltage is above VBIAS the comparator output will be high 1 If the comparator output is low a voltage fault will occur A series 5kQ resistor should be connected from V1 to the resistor divider Comparator Inputs These pins are voltage inputs to internal comparators The voltage applied to V2 V3 these pins is compared to the internal BIAS voltage of 1 6V If the input voltage is above VBIAS the comparator outputs will be high 1 VBIAS Low impedance output for use in biasing current sensors and voltage dividers VREF Voltage Reference for the ADC This pin should be left open Crystal Inputs A 32kHz crystal should be connected across these pins Typically a 33pF XIN capacitor is also connected from XIN to GNDA and a 15pF capacitor is connected from XOUT to XOUT GNDA It is important to minimize the capacitance between these pins See the crystal manufacturer datasheet for details ee Pin types P Power Output I Input Input Output Page 81 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 J ERIDIAN Digital Pins COM3 COM2 4 1 COMO LCD Common Outputs These 4 pins provide the select signals for the LCD display 5 0 5 2 SEG SEG8 SEG12
95. tion factors for the current are not at default their values are entered in the fields labeled Old CAL Ix The errors of the energy measurements at 0 60 60 and 180 are entered in the yellow fields labeled 96 Error The spreadsheet will then display phase error the current calibration factor and the PHADJ x factor in the green fields one for each phase If a crosstalk measurement is necessary it should be performed at a low current where the effects of crosstalk are noticeable First if old values for VFEEDx exist in the meter they are entered in the spreadsheet in the row labeled Old VFEEDX one for each phase If these factors are zero 0 is entered for each phase Test current and test voltage are entered in the yellow fields labeled VRMS and IRMS The crosstalk measurement is now conducted at a low current with phase angles of 0 and 180 and the percentage errors are entered in the yellow fields labeled error 0 deg and error 180 deg one pair of values for each phase The resulting VFEEDx factors are then displayed in the green fields labeled VFEEDx 2005 2007 TERIDIAN Semiconductor Corporation V2 0 SEMICONDUCTOR CORP Enter values in yellow fields Results will show in green fields AC frequency 55 click on yellow field to select from pull down list PHASE A EE Energy reading at EN CAL IA 16384 16384 Energy reading at 60 CAL VA 16384 16384 Voltage error a
96. u la for s 84 List of Figures Figure 1 1 TERIDIAN D6534T14A2 Demo Board with Debug Board Basic 11 Figure 1 2 Block diagram for the TERIDIAN D6534T14A2 Demo Board with Debug 12 Figure 1 3 Hyperterminal Sample Window with Disconnect Button 15 Figure 1 4 Port Speed and Handshake Setup left and Port Bit setup 16 Figure 1 5 Command Line Help 17 Figure 1 6 Typical Calibration Macro 28 Figure 1 7 Emulator Window Showing Reset and Erase Buttons see 5 30 Figure 1 8 Emulator Window Showing Erased Flash Memory and File Load 30 Figure 2 1 Watt Meter with Gain and Phase nnn a 1 4 41 Figure 2 2 Phase Angle 45 Figure 2 3 Calibration Spreadsheet for Three Measurements 50 Figure 2 4 Calibration Spreadsheet for Five 50 Figure 2 5 Calibration Spreadsheet for Rogowski 51 Figure 2 6 Non Linearity Caused by Quantification 52 Figure 2 7 VONAGE TOR VV T
97. ulse Sources 35 Table 1 9 MPU Instantaneous Output 36 Table 1 10 MPU Status Word Bit 37 Table 1 11 MPU Accumulation Output 38 Table 1 12 Commands for MPU Data 39 Table 3 1 D6534T14A2 Demo Board 61 Table 4 1 D6534T14A2 Demo Board Bill 69 Table 4 2 Debug Board Bill 76 Page 7 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 71M6534H Demo Board User s Manual SEMICONDUCTOR CORP Page 8 of 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 1 2 1 3 U ERIDIAN GETTING STARTED GENERAL The TERIDIAN Semiconductor Corporation TSC 71M6534H Demo Board is a demonstration board for evaluating the 71M6534H device for 3 phase electronic power metering applications It incorporates a 71M6534 or 71M6534H integrated circuit peripheral circuitry such as a serial EEPROM emulator port and on board power supply as well as a companion Debug Board that allows a connection to a PC through a RS232 port The demo board allows the evaluation of the 71 6534 or 71M6534H energy meter chip for measurement accuracy and overall system use The board is pre programmed with a Demo Program in the FLASH memory of the 71M
98. zero transitions of the input signal Displays for total consumption wrap around at 999 999Wh or VARh VAh due to the limited number of available display digits Internal registers counters of the Demo Code are 64 bits wide and do not wrap around When entering the phase parameter use 1 for phase A 2 for phase B 3 for phase C and 0 or blank for all phases a 24 86 2005 2007 TERIDIAN Semiconductor Corporation V2 0 1 8 2 1 8 3 J ERIDIAN USING THE DEMO BOARD FOR ENERGY MEASUREMENTS The 71M6534 6534H Demo Board was designed for use with current transformers CT The Demo Board may immediately be used with current transformers having 2 000 1 winding ratio and is programmed for a Kh factor of 3 2 and see Section 1 8 4 for adjusting the Demo Board for transformers with different turns ratio Once voltage is applied and load current is flowing the red LED D5 will flash each time an energy sum of 3 2 Wh is collected The LCD display will show the accumulated energy in Wh when set to display mode 3 command gt M3 via the serial interface Similarly the red LED D6 will flash each time an energy sum of 3 2 VARh is collected The LCD display will show the accumulated energy in VARh when set to display mode 5 command gt 5 via the serial interface ADJUSTING THE KH FACTOR FOR THE DEMO BOARD The 71M6534 6534H Demo Board is shipped with a pre programmed scaling factor Kh of 3 2 i e 3 2Wh per

TERIDIAN 71M6534 Demo Board User`s Manual

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